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Save favourites and share folders."},"skills":{"title":"One skill list","text":"Admins keep the list, teachers tag problems, and progress follows those skills across classes and languages."},"invitations":{"title":"Invite by email or link","text":"Students join a class from an email invitation or a shareable link, and hear about each test assigned to them."},"languages":{"title":"English and French","text":"Each person picks their language, and the emails they receive follow it."},"export":{"title":"Results you can take with you","text":"Export a test’s results to CSV, tab switches and time away included."}},"faq":{"title":"Questions, answered.","intro":"What schools usually ask before their first test.","what":{"question":"What is Echelio?","answer":"Echelio is a coding assessment platform for schools. Teachers publish code tests and quizzes, students take them online in the browser, every code submission is graded automatically against the teacher’s test cases, and teachers see what each learner can do, skill by skill. Between tests, students practise code challenges for free."},"audience":{"question":"Who is Echelio for?","answer":"Schools and programs that teach programming: coding schools and bootcamps, colleges and universities, and secondary schools. Teachers write and run the tests, and students take them in the browser, with nothing to install."},"students":{"question":"Is Echelio free for students?","answer":"Yes. Students never pay: the teacher or the school does. Any student can sign up and practise for free, with or without a school, and every student in a class takes their tests for free, in the browser, with nothing to install."},"practice":{"question":"Can students practise outside tests?","answer":"Yes. Any student, in a class or learning alone, can solve about 945 code challenges in JavaScript, Java, Python, PHP and SQL at their own pace, with a daily challenge, streaks and a weekly goal, and their school’s leaderboard once they are in a class. Practice is never graded, never changes Progress levels, and teachers see only which problems each student solved and when."},"languages":{"question":"Which programming languages does Echelio support?","answer":"JavaScript, Java, Python, PHP and SQL today, with more languages on the way. In JavaScript, run on Node.js 24, students write a function. In Java, they write a method or a complete program that reads standard input and prints its answer. In Python 3.14, they write a function or a complete program that reads standard input and prints its answer. In PHP 8.5, they write a function, a complete program, or a function that reads and changes a database through PDO. In SQL, they write a query, a data change or a table design, and the result is compared row by row. Each problem is written for one language, and the school’s skill list follows learners across all of them."},"mixed":{"question":"Can one test have code problems and a quiz?","answer":"Yes. A Code and quiz test holds code problems and one of the teacher’s quizzes, in two parts, in the order the teacher picks. Code is graded against public and hidden cases, the quiz grades itself except open answers, which wait for the teacher’s review, and the two parts make one score: the teacher sets how much the code part counts, from 10% to 90%."},"cheating":{"question":"How does Echelio limit cheating?","answer":"During a test, the editor blocks copy, cut and paste, and each tab switch is recorded with the time away. Hidden cases never reach the browser. After a code test, each student’s code is compared with their classmates’, and the teacher sees the answers most alike side by side. No browser-based test can rule cheating out entirely: these controls make it harder and make it visible."},"sandbox":{"question":"Where does student code run?","answer":"In an isolated Judge0 sandbox, never inside Echelio itself. Each case runs in a fresh execution with time and memory limits, and results are compared with the expected ones on the server."},"hosting":{"question":"Where is Echelio hosted?","answer":"On servers in Germany (Hetzner, in Nuremberg), where student code runs too. A few providers are outside the EU, such as the email service and, when teachers use AI, OpenRouter. The privacy policy lists each one."},"evidence":{"question":"What do teachers see after a test?","answer":"Every run and submission, failed attempts sorted by kind, tab switches and time away, and each student’s score, with a CSV export. Progress turns the results into a level per skill for every learner."},"ai":{"question":"Can AI grade quiz answers?","answer":"Yes. AI drafts quiz questions and grades open answers, with a reason for each grade, within a monthly allowance included in your plan. Teachers can change any grade. Student answers are not used to train models. Schools on the Organization plan can use their own OpenRouter key instead."}},"cta":{"title":"Your next test starts here.","teachersTitle":"Teachers","teachersText":"Try Echelio free for 14 days: write problems, build a test and follow your class.","studentsTitle":"Students","studentsText":"Students never pay. Create your account and start practising, with or without a school. With your teacher’s class link, you take your tests here too.","studentsLink":"What students get"},"footer":{"explore":"Explore","account":"Account","copyright":"© {year} Echelio","theme":{"label":"Theme","system":"System","light":"Light","dark":"Dark"}}},"legal":{"nav":{"label":"Legal","privacy":"Privacy policy","terms":"Terms of use","notice":"Legal notice","privacyShort":"Privacy","termsShort":"Terms","shortLabel":"Legal pages"},"updated":"Last updated {updated}","contents":"On this page","subprocessors":{"line":"{name} ({location}): {purpose}","worldwide":"served worldwide","hosting":"Hosts the application, its database, its job queue, and the server that runs students’ code. Holds all the data described above.","email":"Delivers the emails Echelio sends: class invitations, test assignments, folder invitations, password reset links, and product news. Receives the recipient’s email address and the content of the message. For product news, it also keeps the address’s list (teachers or students), its language, and whether it unsubscribed.","ai":"When a teacher uses an AI feature, and to translate problems. Receives the text described below and forwards each request to the model provider it selects.","network":"Carries all traffic to Echelio (protection against attacks, redirects) and, on the public pages only, counts visits without cookies. Sees each request’s network address, the page, and the browser.","payments":"Takes payment for the Teacher plan: the card, the billing address, and tax details are entered on Stripe’s page. Receives the teacher’s email address and tells Echelio the subscription’s status."},"privacy":{"metaTitle":"Privacy policy","metaDescription":"How Echelio handles personal data: what it collects, why, who processes it, how long it is kept, and how to exercise your rights.","title":"Privacy policy","intro":"This policy explains what personal data Echelio handles when schools, teachers, and students use it, and what your rights are.","who":{"title":"Who we are","intro":"Echelio is a coding assessment platform for schools. In this policy, “we” means Echelio.","scope":"It covers the Echelio website and application. For questions about your data, write to {privacyEmail}."},"roles":{"title":"Our role: controller and processor","school":"Echelio is used by schools and other training organizations. For the data of its teachers and students (classes, questions, answers, results), the organization is the data controller: it decides why and how the data is used. Echelio acts as its processor, handling that data on the organization’s behalf and following its instructions. Its administrators can stop Echelio’s product news to its students.","echelio":"For its own website and for the accounts needed to sign in and keep the service secure, Echelio is the controller. That covers account and sign-in data, security records, and the emails the service sends, including product news.","students":"If you are a student, your school is your first contact for questions about your results and about how your data is used in your course. You can also write to us."},"data":{"title":"What we collect and why","intro":"We collect only what the service needs. This list comes from what the application stores.","account":"Account: your name, email address, and a hash of your password if you have one (never the password itself), your role (teacher or student), whether the account is active, and whether your email address is confirmed, with, until it is entered, a hash of the 6-digit code that confirms it. If you sign in with Google: your Google account’s identifier and the address it had when you linked it.","classes":"Organization and classes: the organization you belong to and your role in it, the classes you are in, and each class’s name and dates.","invitations":"Invitations: the email addresses teachers invite to a class or share a folder with, and whether and when the invitation email was sent.","content":"What teachers write: questions, test cases, solutions, quizzes, folders, skills, and the tests they schedule.","work":"What students produce in code tests: the code they write, which is saved as they type, each run and submission with its time, the result of every test case (including run time and memory), the score, and the output of visible test cases.","quizzes":"Quiz answers: each answer, the automatic result, the final result, and who set it.","activity":"Test activity: when a student joined, finished, ran examples, or submitted, and, only when the teacher turned the option on for that test, each time the student left the test page and for how long.","grading":"Grading and progress: teachers’ corrections, the verdict and short reason of an AI grading when a teacher asked for one (the reason is for the teacher only), and the skill levels Echelio calculates from a learner’s results.","technical":"Security records: to limit guessing of passwords and join codes, we keep for 24 hours the email address and network address of failed sign-in attempts and password reset requests, and a hash of the network address and browser identifier of join-code attempts.","visits":"Visits to the public site: on the public pages only, never inside the application, Cloudflare Web Analytics counts visits: the page, the site you came from, your country, your browser and device type, and how fast the page loaded. It sets no cookie, stores nothing on your device, and does not follow you from one visit or site to another.","language":"Preferences: the language you choose for the interface, and whether you want product news.","quotes":"Quote requests: when a school asks for a quote, the name, work email, and role of the person asking, and the school’s name, country, type, size, languages, start date, and message entered in the form.","contact":"Contact messages: when you write to us from the contact form, your name, email address, the topic you choose, the message you write, and the language of the page.","billing":"Billing (Teacher plan): Stripe’s identifiers for the customer and the subscription, the plan, price, and status, the trial and renewal dates, a fingerprint of the card that started a free trial (so each card gets one trial), and when the terms were accepted. The card number and billing address stay with Stripe; Echelio never sees the card number.","never":"We do not run advertising, we do not sell personal data, and we do not track people: the visit counts above use no cookie or identifier. Echelio does not profile people for marketing."},"bases":{"title":"Legal bases","intro":"Under the GDPR and similar laws, we rely on these bases.","contract":"Performance of a contract (providing the service to the organization and its members), for account data and for the data processed on the organization’s behalf.","interests":"Legitimate interests, for keeping the service secure, preventing abuse and cheating on tests, fixing faults, counting visits to the public site, and sending product news about the service to people who have an account, which they can stop in their account settings or from any of those emails.","obligation":"Legal obligations, when the law requires us to keep or hand over information.","school":"For the data it controls, the organization chooses its own legal basis, for example its teaching mission or its contract with the student. We do not rely on consent for ordinary use of Echelio."},"recipients":{"title":"Who sees your data","intro":"Access depends on role, and an organization never sees another organization’s members or results.","teachers":"Teachers see the classes they teach, and their students’ code, answers, results, and test activity. They see questions and quizzes shared with them.","similarity":"When a teacher turns it on for a code test, they can see, once the test ends, which of their students’ answers are alike, side by side. Students are told while they take the test. The comparison runs on Echelio’s servers and sends code nowhere.","admins":"Organization administrators manage members and settings of their own organization.","webhook":"An organization can have Echelio send its tests’ results to its own systems, such as its learning platform: each student’s name, email, scores, how each question ended, finish time, and tab switches. Echelio sends them only to the address the organization’s administrators set, never code or answers.","students":"Students see their own work and results.","display":"A teacher can open a live class display on a screen. It shows participants’ names and scores to the people in the room.","staff":"A small number of Echelio staff can access organizations’ data to run the service and give support, only as far as the task needs. What they open in Echelio’s staff pages is recorded."},"providers":{"title":"Service providers","intro":"We use the providers below to run Echelio. Each handles personal data only to provide its service.","execution":"Code execution. Echelio runs students’ code itself, on its own server at {hostName}, in {hostPlace}. When a student runs or submits code, the code and the test input go to that server, which runs it in an isolated sandbox with time and memory limits and returns the output. No other company receives it, and nothing that identifies the student is sent with it.","ai":"AI features. Drafting and grading run only when a teacher uses them. AI quiz drafting sends the teacher’s request (topic, level, question types, language) and the beginning of the quiz’s existing questions, so the model does not repeat them. AI problem drafting sends the teacher’s request (what the problem should practise, its programming language and kind, its difficulty, and the language to write in) and the titles of problems the teacher can already see in that programming language, for the same reason. AI grading sends, for each open answer a teacher chose to grade, the question, any code shown with it, the grading notes, the explanation, and the student’s answer. Problem translation runs on its own: when a problem is published, used in a test, or opened by someone who reads the other language, its title, statement and constraints are sent to be translated between English and French, and the translation is kept with the problem; no student’s code or answer is sent. Quiz translation runs only for a quiz whose author switched it on: then, and after each change to the quiz, its title, description, and each question’s prompt, options, explanation, and accepted short answers are sent to be translated, and the translation is kept with the quiz; grading notes and students’ answers are not sent. None of these sends a name, email address, or account number. If a student writes personal data in an answer, that text is sent too. OpenRouter forwards each request to the model provider it selects for the chosen model. Echelio sends these requests through its own OpenRouter account, set to use only providers that do not train on the text, so student answers are not used to train models. An organization on the Organization plan may add its own OpenRouter key instead; then that organization’s account and the model provider handle the text under their own terms.","email":"Email. Echelio sends service emails (invitations, test assignments, password resets) and, a few times a year, product news about new features to people who have an account. Every product news email has an unsubscribe link, and product news can also be turned off in the account settings. For product news, Brevo also keeps each address’s list (teachers or students), its language, and whether it unsubscribed. Echelio sends no advertising for other companies.","payments":"Payments. A teacher who buys the Teacher plan pays on Stripe’s checkout page. Stripe handles the card, the billing address, and tax details under its own privacy policy, and sends Echelio the subscription’s status, never the card number. Schools on the Organization plan are invoiced through Stripe.","google":"Sign in with Google. If you choose Continue with Google, Google tells Echelio your Google account’s identifier, your name, your email address, and whether Google has verified that address. Echelio asks for nothing else (no contacts, files, or calendar) and tells Google nothing about what you do in Echelio. Google handles the sign-in itself under its own privacy policy."},"transfers":{"title":"International transfers","intro":"Echelio’s servers, including the one that runs code, are in {hostPlace}. OpenRouter, Stripe, and Cloudflare are in the United States, outside the European Economic Area, and the model providers OpenRouter forwards requests to may be elsewhere too.","safeguards":"These transfers rely on the contractual safeguards those providers offer."},"retention":{"title":"How long we keep data","intro":"Some records expire on their own; the rest stays while the organization uses Echelio.","sessions":"Sign-in sessions last 7 days at most and are then deleted.","reset":"Password reset links are valid for one hour and are deleted once expired.","google":"A Google sign-up left before choosing student or teacher is deleted after 15 minutes.","security":"Failed-attempt records are deleted after 24 hours.","school":"Accounts, classes, questions, and results are kept while the organization uses Echelio. When an organization stops paying or its contract ends, it becomes read-only and its data is kept for 90 days, so it can pay again and get everything back. Its admins are emailed 30 days, 7 days, and the day before; then the data is deleted. We keep only a short record that the organization was deleted (its identifier, plan, and dates, no names) for support and accounting, and the fingerprint of any card that started a free trial, so each card still gets one trial. A student’s data is deleted immediately when their account is deleted.","signup":"A teacher sign-up that never finishes checkout, and a student sign-up that never confirms its email address, are deleted after 7 days. The code that confirms an email address works for 10 minutes.","billing":"Invoices and payment records are kept, by Stripe and by us, as long as tax and accounting law requires.","quotes":"A quote request is kept while we discuss it with the school and for up to 2 years after, then deleted.","contact":"A contact message is kept while we answer it and for up to 2 years after, then deleted.","news":"An address is removed from Brevo when its account is deleted. While the account exists, an address that unsubscribed from product news stays marked as unsubscribed, so it is not emailed again.","backups":"Backup copies are kept for up to {backupDays} days and then permanently deleted. Until then they are used only to restore the service after an incident."},"security":{"title":"How we protect data","intro":"These measures are part of the application.","passwords":"Passwords are stored only as bcrypt hashes. Sign-in session tokens and password reset tokens are stored only as hashes.","sessions":"The sign-in cookie cannot be read by page scripts and is sent only over secure connections in production.","sandbox":"Students’ code runs on a separate execution server, in a sandbox with time, memory, and output limits.","keys":"An organization’s AI key is encrypted before it is stored, and only its last four characters are ever shown again.","limits":"Sign-in attempts, password resets, and join-code attempts are rate-limited.","access":"Each person sees only what their role and organization allow, and hidden test cases are never sent to students’ browsers."},"rights":{"title":"Your rights","intro":"You have the right to:","access":"access the personal data we hold about you and get a copy;","rectification":"have inaccurate data corrected;","erasure":"have your data erased, where the law provides for it;","objection":"object to processing based on legitimate interests, and ask us to restrict processing;","portability":"receive the data you provided in a portable format, where the law provides for it;","complaint":"lodge a complaint with the data protection authority of your country.","how":"To use these rights, write to {privacyEmail}. We may ask you to prove who you are, and we answer within one month.","school":"For data an organization controls, we pass your request to it or point you to it, because it decides what happens to that data."},"children":{"title":"Children and students","school":"The organization decides who uses Echelio. It is responsible for informing students and for any parental consent its law requires.","age":"Echelio sets no minimum age. Students use it through their school or training organization, and whether they are under 18 depends on the school."},"cookies":{"title":"Cookies and local storage","intro":"Echelio uses only what it needs to work.","session":"Sign-in cookie: keeps you signed in, for 7 days at most. Not readable by page scripts.","google":"Google sign-in cookies: one protects a Google sign-in while it is in progress (10 minutes at most), the other holds a new account while you choose student or teacher (15 minutes at most). Not readable by page scripts.","language":"Language cookie: remembers your language for one year. Visiting a page in a language sets it.","theme":"Theme cookie: remembers the theme you pick (system, light or dark) at the bottom of the public pages, for one year. It is set only when you pick one.","storage":"Browser storage: a copy of the code you are writing, so a lost connection does not lose your work, and the language last chosen for AI quiz and problem drafting. These stay on your device.","none":"These are essential, so no consent banner is needed. There are no advertising, analytics, or third-party cookies."},"changes":{"title":"Changes to this policy","text":"When we change this policy, we update the date at the top. For a significant change, we also tell organization administrators in the application or by email."},"contact":{"title":"Contact","text":"For any question about this policy or your data, write to {privacyEmail}. The publisher’s details are in the legal notice."}},"terms":{"metaTitle":"Terms of use","metaDescription":"The terms for using Echelio: accounts, responsibilities of schools, acceptable use, content, AI features, and liability.","title":"Terms of use","intro":"These terms apply to everyone who uses Echelio. By creating an account or signing in, you accept them.","service":{"title":"The service","what":"Echelio is a coding assessment platform for schools and teachers. Teachers build code tests and quizzes, students take them, and Echelio runs and grades the answers and shows the results. Who publishes it is stated in the legal notice.","accept":"If you use Echelio for an organization, you confirm that you may accept these terms on its behalf. How we handle personal data is described in the privacy policy."},"subscription":{"title":"Plans, payment, and cancellation","plans":"Students never pay. A teacher can buy the Teacher plan (one teacher, one class, up to 30 students) on Echelio. Schools buy the Organization plan from us under a separate agreement, usually paid by invoice.","trial":"The Teacher plan starts with a 14-day free trial, once per organization and once per card. A card is required. Unless you cancel before the trial ends, it becomes a paid subscription, monthly or yearly as you chose, and your card is charged then. We email you 3 days before the trial ends.","renewal":"A subscription renews automatically at the end of each period, at the price you subscribed at, until you cancel. Prices exclude VAT and sales tax, which are added at checkout where they apply. If we change the price, we tell you at least 30 days before your next renewal at the new price.","cancel":"You can cancel at any time in Manage billing, on your organization’s Billing tab. The subscription then stops at the end of the period already paid, and nothing more is charged.","refunds":"Payments are not refunded, including for the rest of a period you cancel during, except where the law requires a refund. Joining a school on the Organization plan ends your Teacher plan at once, with no further charge and no refund for the rest of the period.","withdrawal":"If you are a consumer in the European Union, you can withdraw within 14 days of subscribing by writing to us. With the free trial, this period ends before your first payment. If you subscribe without a trial, you ask us to start at once, and if you withdraw within 14 days we refund what you paid, minus the days already used.","lapse":"If a payment fails, our payment provider tries again for up to two weeks, and everything keeps working meanwhile. If it still fails, or the subscription ends, your organization becomes read-only: you can sign in, see your classes and results, and export them, but nothing new can be created. Its data is kept for 90 days, then deleted; we email your organization’s admins 30 days, 7 days, and the day before.","payments":"Payments are processed by Stripe. We never see your card number."},"accounts":{"title":"Accounts and roles","roles":"There are teacher accounts, student accounts, and organization administrators. Students usually join through a class invitation and take tests with a join code; teachers belong to an organization. What you can see and do depends on your role.","duties":"Give accurate information and keep your password secret. You are responsible for what happens under your account. Tell us at once if you think someone else has used it."},"schools":{"title":"Responsibilities of schools","intro":"An organization that uses Echelio is responsible for how its members use it. It must:","lawful":"have the right to process its students’ and teachers’ personal data in Echelio, and a lawful basis for doing so;","inform":"inform students, and their parents where the law requires it, about how their data is used;","rules":"set clear rules for each test, and decide what happens when those rules are broken;","questions":"make sure it may use the questions and material it adds."},"use":{"title":"Acceptable use","intro":"You must not:","attacks":"attack, probe, overload, or try to escape the code sandbox or any other part of the service;","access":"get into accounts, classes, or data that are not yours, or get around limits and rate limits;","cheating":"use tools, scripts, or other people to cheat in a test, or share answers when the teacher has not allowed it;","content":"upload or write content, including code, that is unlawful, infringes someone’s rights, or is meant to harm people or systems;","automation":"scrape the application or use it to build a competing service.","action":"We may remove content, suspend access, or close an account that breaks these rules, and an organization may do the same for its members."},"content":{"title":"Content and ownership","ownership":"Schools and teachers own the questions, quizzes, and class material they add. Students own the code and answers they write.","licence":"You give Echelio and your organization the right to store, process, display, and run your content, only as far as needed to provide the service: for example, to run students’ code, show results to teachers, and export a class’s results.","echelio":"Echelio’s software, name, logo, and design belong to the publisher. These terms give you the right to use the service, not to copy or resell it."},"ai":{"title":"AI features","optional":"AI quiz and problem drafting and AI grading are optional and included in each plan up to a monthly allowance; problem and quiz translation is included without counting against it. An organization on the Organization plan may connect its own OpenRouter account instead; it then pays for that use and answers for its choice of model.","wrong":"AI output can be wrong, incomplete, or unfair. Drafted questions may contain mistakes, a translation may misword a problem or a quiz question, and a grade may misjudge an answer.","teacher":"Teachers keep the final word: they review drafted questions before using them, and they can change any AI grade. An AI grade counts until a teacher changes it, so teachers should check them."},"availability":{"title":"Availability","service":"We work to keep Echelio running, but we provide it as it is and do not promise it will always be available or free of errors. We may change or remove features, and we try to give notice of significant changes.","execution":"Running code depends on an execution server that can be unavailable. Teachers should plan for that when they schedule an important test."},"termination":{"title":"Ending your use","you":"You can stop using Echelio at any time. An organization can close its members’ accounts.","us":"We may suspend or close an account that breaks these terms or puts the service or others at risk, and we try to tell the organization first when we can.","after":"When access ends, data is handled as the privacy policy describes. Clauses that are meant to continue, such as ownership and liability, do."},"liability":{"title":"Liability","law":"Nothing in these terms limits liability that cannot be limited by law, including liability for death or personal injury and for fraud.","limits":"Otherwise, to the extent the law allows, our liability is limited, and we are not liable for indirect damage, loss of data, loss of profit, or a test result affected by an outage or by an AI grade. Organizations should keep their own copy of important results; results can be exported."},"changes":{"title":"Changes to these terms","text":"We may update these terms. The date at the top shows the latest version. For a significant change, we tell organization administrators in the application or by email. If you keep using Echelio after a change takes effect, you accept it."},"contact":{"title":"Contact","text":"Questions about these terms: {contactEmail}."}},"notice":{"metaTitle":"Legal notice","metaDescription":"Who publishes Echelio, who hosts it, and how to contact the publisher.","title":"Legal notice","intro":"The information the law requires about the publisher and host of this website.","publisher":{"title":"Publisher","name":"Name: {publisher}","email":"Email: {contactEmail}"},"host":{"title":"Host","text":"The website and application are hosted by {hostName}, {hostAddress}. The servers are in {hostPlace}."},"property":{"title":"Intellectual property","echelio":"The Echelio name and logo, the design of the website and application, and its texts and illustrations belong to the publisher. Copying or reusing them without written permission is not allowed.","content":"Questions, quizzes, code, and answers added by users belong to their authors, as the terms of use describe.","software":"Echelio uses open-source components, which remain under their own licences."},"data":{"title":"Personal data","text":"How we handle personal data, and how to exercise your rights, is explained in the privacy policy."},"contact":{"title":"Contact","text":"To reach the publisher, write to {contactEmail}."}}},"site":{"nav":{"product":"Product","students":"Students","breadcrumb":"Breadcrumb"},"explore":{"title":"Keep exploring.","label":"Other pages","link":"Learn more"},"footer":{"product":"Product","allFeatures":"All features","webhookDocs":"Results webhook for developers"},"webhooks":{"metaTitle":"Results webhook for developers","metaDescription":"How Echelio sends a school’s test results to its own platform: the signed request, the JSON it carries, checking the signature, and retries.","eyebrow":"For developers","title":"Receive test results on your platform","intro":"When a test ends, Echelio can send its results to your school’s platform: a learning platform, student records, or a script of your own. This page is for the developer who sets up the receiving end.","updated":"Last updated {date}","contents":"On this page","sections":{"overview":{"title":"How it works","body":"An administrator of your school sets an address under Organization → Webhook in Echelio. From then on, each test that ends is sent to that address as an HTTPS POST with a JSON body. It is part of the Organization plan.","points":{"every":"Every test of the school: code tests, quizzes and mixed tests. Practice is never sent.","full":"A full copy each time: every student’s results, not only what changed. Keep the latest copy.","signed":"Signed as the Standard Webhooks specification describes, so you can check each request came from Echelio.","private":"No code and no answers: scores, participation, how each question ended, finish times and tab switches."}},"when":{"title":"When it is sent","body":"A test is sent about a minute after it ends, when its end time passes or a teacher stops it. It is sent again, as a new full copy, whenever a result changes after that:","points":{"late":"a submission made before the end finishes grading;","graded":"a teacher grades an answer, or accepts an answer for every student who gave it;","ai":"the AI grades an open answer;","removed":"a student is removed from the class, or added back."},"group":"Changes within a minute of each other go in one copy, so a teacher grading 30 answers sends one or two copies, not thirty.","final":"Each copy of a test has a sequence one higher than the last. While answers still wait for grading, session.final is false; a later copy brings the settled results.","past":"Tests that ended before the address was set are not sent by themselves; an administrator can send one from its page. To try your side, use Send a test event under Organization → Webhook: it sends made-up results with \"type\": \"test\"."},"request":{"title":"The request","body":"Echelio sends a POST to your address with these headers:","headers":{"content-type":"always application/json;","user-agent":"Echelio-Webhooks/1;","webhook-id":"the delivery’s id, the same on every retry of it;","webhook-timestamp":"when it was sent, in seconds since 1 January 1970 (UTC);","webhook-signature":"v1, followed by the signature, explained below."},"answer":"Answer with any 2xx status within 10 seconds. Anything else counts as a failure and is tried again, a redirect included: redirects are not followed. The address must use HTTPS and be reachable from the internet."},"payload":{"title":"What it contains","body":"A mixed test, sent while one answer still waits for grading:","topLevel":"The top level","scores":"Scores are percentages from 0 to 100, rounded to one decimal, and times are in minutes, as in Echelio’s CSV export.","participationValues":"participation is one of {values}.","outcomeValues":"A quiz question’s outcome is one of {values}; TO_REVIEW waits for a teacher."},"signature":{"title":"Checking the signature","body":"Your administrator finds the signing secret under Organization → Webhook. It starts with whsec_; keep it on your server only. Check each request against its raw body, before parsing the JSON: the signature covers the exact bytes Echelio sent.","libraryTitle":"With a library","library":"Standard Webhooks offers libraries for many languages, listed on standardwebhooks.com. In JavaScript:","nodeTitle":"Without a library","node":"The signature is the HMAC-SHA256 of webhook-id, webhook-timestamp and the body, joined by dots, keyed with the secret’s bytes after whsec_ (base64), and written in base64. In Node.js:","rotate":"When an administrator makes a new secret, the old one stops working at once; deliveries that fail meanwhile are tried again, signed with the new one."},"handling":{"title":"Handling deliveries","points":{"fast":"Answer first, then work. Store the body and answer 200, then process it, so slow work never makes a delivery fail.","sequence":"Keep the highest sequence. For each session.id, keep the copy with the highest sequence and ignore a lower one.","duplicate":"Skip what you have seen. A delivery can arrive twice, for example when your answer was lost; skip a webhook-id you have already handled.","test":"Leave test events out. Requests with \"type\": \"test\" carry made-up students.","match":"Match students by email, the address they sign in with, or by Echelio’s id."}},"retries":{"title":"When delivery fails","body":"Echelio tries a delivery eight times over about two days: at once, then after 1 minute, 5 minutes, 30 minutes, 2 hours, 6 hours, 12 hours and 24 hours. A newer copy of the same test takes the place of one still waiting to be tried again.","email":"If every attempt fails, the school’s administrators get an email, at most one a day. The delivery log under Organization → Webhook shows each delivery, its attempts and your platform’s answer for 30 days. Fix your side, then press Send again."}},"fields":{"top":{"type":"session.results, or test for a test event.","sequence":"Grows by one with each copy of the same test, from 1. A test event has 0.","sentAt":"When this copy was built, in ISO 8601 (UTC).","organization":"Your school: id and name.","class":"The class the test was given to: id and name."},"session":{"id":"The test’s id in Echelio, the same in every copy.","name":"The test’s name, as the teacher wrote it.","format":"CODE, QUIZ or MIXED.","dates":"The test’s scheduled start and end.","closedAt":"When it ended: its end time, or when a teacher stopped it.","stoppedEarly":"Whether a teacher stopped it before its end time.","final":"True once no student’s result can still change by grading.","codeWeight":"Mixed tests: the code part’s share of the score, in percent. Null otherwise.","resultsUrl":"The test’s results page in Echelio, for teachers.","questions":"The questions and problems, in the order students meet them."},"question":{"key":"q1, q2… for quiz questions, c1, c2… for code problems. Students’ results use the same keys.","part":"QUIZ or CODE.","points":"Quiz questions: what the question is worth.","code":"Code problems: the problem’s title, its programming language, and its weight in the score."},"student":{"id":"The student’s id in Echelio.","identity":"The student’s name, and the email they sign in with.","removed":"True when a teacher removed the student from the class after the test; their results stay.","participation":"How the student took part (values below).","provisional":"True while one of the student’s answers or submissions still waits for grading.","rank":"The student’s place in the class; null without a score.","score":"The student’s score on the whole test; null when they did not take it.","quiz":"Quizzes and mixed tests: points, totalPoints and the quiz part’s score. Null in a code test.","code":"Code and mixed tests: the code part’s score and how many problems were passed in full. Null in a quiz.","completed":"When the student finished, and how long after the start, in minutes; null if they never finished.","tabs":"How often the student left the test’s tab, and for how long in all; null when the test does not record tab switches.","questions":"Each question’s outcome (quiz) or best score (code), by key."}}},"hub":{"metaTitle":"Features: code tests, quizzes, progress and practice","metaDescription":"Everything Echelio does for coding classes: auto-graded code tests, quizzes with AI grading, progress by skill, free practice for students, fair testing and a live class display.","eyebrow":"Features","title":"Everything a coding class needs.","statement":"Write a test, let students code in the browser, and read what each one can do, skill by skill. Between tests, students keep practising, for free.","cardsTitle":"One platform, from the first problem to the next lesson.","cardsIntro":"Each part works on its own and feeds the others: tests feed Progress, Progress suggests practice, practice keeps students coding until the next test.","cta":"Start with one class."},"pages":{"codeTests":{"metaTitle":"Auto-graded coding tests for classes","metaDescription":"Online coding exams graded automatically against your test cases, hidden ones included. Students write real code in the browser, in JavaScript, Java, Python, PHP or SQL, and every attempt is kept.","name":"Code tests","title":"Coding tests that grade themselves.","statement":"Write the problem and its test cases once. Students code in the browser, and every submission is checked against every case, hidden ones included, the moment they submit.","card":"Auto-graded coding exams with public and hidden test cases.","points":{"title":"Real code, graded the same way for everyone.","intro":"A code test is a timed session your class joins with a code. Every answer is real code, run in a sandbox and compared with the expected results.","one":{"title":"Public examples, hidden cases","text":"Students run the public examples as often as they like. Hidden cases run only on submit, and their data never reaches the browser."},"two":{"title":"Problems checked before you publish","text":"Echelio runs your reference solution against every case. A problem is published only once it passes all of them."},"three":{"title":"Every attempt kept","text":"Runs and submissions are saved with their results, so a score always comes with the code and the cases behind it."}},"steps":{"title":"From a problem to a graded test.","one":{"title":"Write or pick problems","text":"Give a prompt, starter code, examples and hidden cases, or pick problems from the platform library and your school’s problem bank."},"two":{"title":"Schedule the test","text":"Choose the class, the time window and the problems. Students hear about the test and join it with its code."},"three":{"title":"Read the results","text":"Scores arrive as students submit. Failed attempts are sorted by kind, and the results feed each learner’s Progress."}},"details":{"title":"The details.","intro":"What a code test supports today.","one":{"term":"Languages","text":"JavaScript on Node.js 24, Java 21, Python 3.14, PHP 8.5 and SQL on SQLite, with more languages on the way. Each problem is written for one language."},"two":{"term":"Problem formats","text":"In JavaScript, students write a function. In Java, they write a method or a complete program that reads standard input and prints its answer. In Python, they write a function or a complete program that reads standard input and prints its answer. In PHP, they write a function, a complete program, or a function that reads and changes a database through PDO. In SQL, they write a query, a data change or a table design, and the result is compared row by row."},"three":{"term":"Difficulty","text":"Each problem is easy, medium or hard. A test runs from easy to hard and can shuffle the problems within each level."},"four":{"term":"Failed attempts","text":"Sorted into syntax and compile errors, crashes, wrong output, timeouts and missed edge cases."},"five":{"term":"Problem library","text":"A platform library of about 945 problems that every school can use, next to the problems your teachers write. Save favourites and share folders."},"six":{"term":"Export","text":"Export a test’s results to CSV, with each student’s score, tab switches and time away."}},"faq":{"title":"Questions about code tests.","intro":"What teachers ask before their first auto-graded test.","one":{"question":"How are coding tests graded?","answer":"Automatically. Each submission runs in an isolated sandbox against every test case of the problem, public and hidden, and the teacher sees which cases passed and how the others failed."},"two":{"question":"Can students see the hidden test cases?","answer":"No. Hidden inputs, expected results and raw output never reach the browser. Students see only whether each hidden case passed, so they cannot write code that fits the examples alone."},"three":{"question":"Do students need to install anything?","answer":"No. Students write, run and submit code in a full editor in the browser. Their code runs on Echelio’s servers, never on their computer."},"four":{"question":"Which programming languages can a test use?","answer":"JavaScript, Java, Python, PHP and SQL today, with more languages on the way. JavaScript runs on Node.js 24, Java on Java 21, Python on Python 3.14, PHP on PHP 8.5 and SQL on SQLite."},"five":{"question":"Can I reuse problems written by other teachers?","answer":"Yes. Problems your teachers write stay in your school’s problem bank, and the platform library is open to every school. Teachers can also share folders with each other."},"six":{"question":"What happens if a student’s code never stops?","answer":"Each case runs with time and memory limits. Code that runs too long is stopped with a timeout, which is recorded as its own kind of failure."}},"cta":"Give your first auto-graded test."},"quizzes":{"metaTitle":"Online quizzes with AI drafting and AI grading","metaDescription":"Quizzes for what code can’t grade: single and multiple choice, true or false, short and open answers. Draft questions with AI and let it grade open answers, while teachers keep the last word.","name":"Quizzes","title":"Quizzes for everything code can’t test.","statement":"HTML and CSS, Git, framework concepts, reading code: give a quiz as a test, grade choices automatically, and let AI grade open answers, with a reason for each grade.","card":"Five question types, AI drafts, and AI grading you can override.","points":{"title":"Five question types, graded fairly.","intro":"A quiz is given as a test, like a code test: one class, one time window, one join code.","one":{"title":"Graded on submit","text":"Single and multiple choice, true or false and short answers are graded automatically. Multiple choice is all or nothing."},"two":{"title":"Drafted with AI","text":"Describe the topic and AI drafts the questions, in English or French. You edit every question before it reaches a class."},"three":{"title":"Open answers graded by AI","text":"When you ask, AI grades open answers, with a reason for each grade that only teachers see. You can change any grade."}},"steps":{"title":"From a quiz to its results.","one":{"title":"Write the quiz","text":"Add questions by hand or draft them with AI. Any question can carry a code snippet, points and an explanation."},"two":{"title":"Give it as a test","text":"Pick the class and the time window. Students answer one question at a time and move forward only."},"three":{"title":"Review and export","text":"Choices are graded at once. Review open answers yourself or with AI, accept a common answer for everyone, then export to CSV."}},"details":{"title":"The details.","intro":"What a quiz supports today.","one":{"term":"Question types","text":"Single choice, multiple choice, true or false, short answer and open answer. Each can show a read-only code snippet."},"two":{"term":"Short answers","text":"Compared with each accepted answer after trimming and collapsing spaces, with case sensitivity when you want it."},"three":{"term":"Anti-cheating","text":"Questions and answer options shuffled per student, copy and paste blocked, and tab switches recorded."},"four":{"term":"Results for students","text":"You choose whether students see their score and the correct answers. Correct answers appear only once the test closes."},"five":{"term":"AI allowance","text":"AI drafting and grading use a monthly allowance included in your plan. Student answers are not used to train models."},"six":{"term":"Sharing","text":"Share a quiz with teachers of your school, duplicate it, or copy one of Echelio’s own quizzes and make it yours."}},"faq":{"title":"Questions about quizzes.","intro":"What teachers ask about quizzes and AI.","one":{"question":"Can AI grade open answers?","answer":"Yes, when the teacher asks. AI marks each open answer correct or wrong and gives a reason that only teachers see. Teachers can change any grade, and every change is recorded as theirs."},"two":{"question":"Do quiz results change a student’s Progress levels?","answer":"No. Quiz answers are easy to guess or copy, so Progress levels come from code tests only. Quiz results stay in the test’s results and its CSV export."},"three":{"question":"Can students practise with a quiz?","answer":"Yes. A teacher can open a quiz for practice. Students then take it on their own, see the answer and its explanation after each question, and try again as often as they like. Echelio also publishes practice quizzes of its own."},"four":{"question":"In which languages can AI draft a quiz?","answer":"English and French. The questions are yours to edit before you give the quiz."},"five":{"question":"Can I project a quiz’s leaderboard?","answer":"Yes. Every test, quizzes included, has a class display for the projector: the join code, the time left and a live leaderboard that ends on a podium."},"six":{"question":"Are student answers used to train AI models?","answer":"No. Answers go to the AI only when a teacher asks for AI grading, and they are not used to train models."}},"cta":"Give your first quiz."},"progress":{"metaTitle":"Student progress tracking by skill","metaDescription":"Echelio turns coding test results into a level per skill for every learner, lists the learners who need attention and why, and builds a follow-up test from problems they haven’t solved yet.","name":"Progress","title":"Know what every learner can do.","statement":"Progress turns test results into a level per skill for each learner, says who needs attention and why, and prepares the follow-up test. Nobody fills in a skill grid by hand.","card":"A level per skill for every learner, built from test results.","points":{"title":"From results to the next lesson.","intro":"Every problem is tagged with skills from your school’s list, and every problem solved in a test counts toward a level in those skills.","one":{"title":"A level per skill","text":"Not yet, easy, medium or hard. A level is reached once three different problems of that difficulty are fully solved in tests."},"two":{"title":"Who needs attention, and why","text":"A falling score, skills with no level yet, a missed test or a week without work: each learner on the list comes with the reason."},"three":{"title":"A follow-up test in one click","text":"Create test picks problems at the right difficulty that those learners haven’t solved yet, and opens the test builder for them."}},"steps":{"title":"How Progress builds itself.","one":{"title":"Tag problems with skills","text":"Admins keep one skill list for the school. Teachers tag problems, and Echelio suggests tags from each problem’s topics."},"two":{"title":"Give tests","text":"Every problem fully solved in a test counts toward the learner’s level at its difficulty, across classes and languages."},"three":{"title":"Act on what you see","text":"Open a learner’s page for their levels, tests, practice and quizzes, or follow up with a test for the learners who need it."}},"details":{"title":"The details.","intro":"How levels and attention are worked out.","one":{"term":"Levels","text":"Not yet, easy, medium and hard, per skill. Three fully solved problems at a difficulty reach that level."},"two":{"term":"What counts","text":"Code test solves only. Practice and quizzes never change levels, so a level always reflects work done in a test."},"three":{"term":"Skill list","text":"One list per school, kept by its admins. Skills follow learners across classes and programming languages."},"four":{"term":"Needs attention","text":"A latest score 20 points below the learner’s average, three skills with no level, a missed test, or seven days without work."},"five":{"term":"Student page","text":"One page per student, with tabs for Progress, Tests, Practice and Quizzes."},"six":{"term":"Practice panel","text":"Practice solves per student, by difficulty and skill, and when they last practised. No code and no failed attempts."}},"faq":{"title":"Questions about Progress.","intro":"What teachers ask about levels.","one":{"question":"How does Echelio work out a student’s level?","answer":"For each skill, Echelio counts the different problems tagged with it that the student fully solved in tests. Three solved at a difficulty reach that difficulty’s level: easy, medium or hard."},"two":{"question":"Does practice change Progress levels?","answer":"No. Only tests count, so every learner’s level rests on the same kind of work. Teachers see practice separately: which problems each student solved and when."},"three":{"question":"Who decides the skills?","answer":"The school’s admins keep one skill list. Teachers tag problems with those skills, and Echelio suggests tags from each problem’s topics for admins to review."},"four":{"question":"Why is a learner listed as needing attention?","answer":"Each line gives the reason: a latest score well below their average, several skills with no level yet, a missed test, or no work for a week. The main kind of mistake they make is shown too."},"five":{"question":"Can I see one student’s whole history?","answer":"Yes. Each student has a page with their level in each skill, every test result, their practice and their quiz results."},"six":{"question":"Does Progress follow a student across classes?","answer":"Yes. Skills belong to the school, not to a class, so a learner’s levels add up across every class and programming language."}},"cta":"See your class, skill by skill."},"practice":{"metaTitle":"Coding practice for students, free in every class","metaDescription":"About 945 code challenges in JavaScript, Java, Python, PHP and SQL that students solve at their own pace, with a daily challenge, streaks, a school leaderboard and practice quizzes. Free for students.","name":"Practice","title":"Practice that keeps students coding.","statement":"Between tests, students solve code challenges at their own pace. A daily challenge, streaks and a school leaderboard bring them back, and practice never touches their grades.","card":"About 945 code challenges, a daily challenge, streaks and a leaderboard.","points":{"title":"Built for practice, not for grades.","intro":"Practice is free for every student, in a class or learning alone. It opens the whole platform library and keeps score in points, never in grades.","one":{"title":"About 945 code challenges","text":"JavaScript, Java, Python, PHP and SQL, easy to hard, in English or French, filtered by language, difficulty, skill and status. Each one is checked against public and hidden cases."},"two":{"title":"Reasons to come back","text":"A daily challenge for the whole school, a streak of days, a weekly goal, tiers from Bronze to Diamond and a school leaderboard."},"three":{"title":"Private by design","text":"Teachers see which problems a student solved and when, never their code or failed attempts. Practice never changes Progress levels."}},"steps":{"title":"How practice works.","one":{"title":"Pick a challenge","text":"Start from Suggested for you, today’s challenge or the full list. Each challenge shows its difficulty and its points."},"two":{"title":"Code and submit","text":"Run the public examples, then submit. A challenge is solved only when every case passes, hidden ones included."},"three":{"title":"Earn points","text":"1 point for easy, 3 for medium and 5 for hard on the first solve, plus a bonus point for the daily challenge."}},"details":{"title":"The details.","intro":"What students find in practice today.","one":{"term":"Daily challenge","text":"The same problem each day for the whole school, or for everyone practising without one, easier early in the week and harder at the weekend. Solving it on the day earns a bonus point."},"two":{"term":"Streak and weekly goal","text":"The streak counts days in a row with a solve. Each student sets a weekly goal of 1, 3, 5 or 10 problems."},"three":{"term":"Leaderboard","text":"Students of the same school, ranked all time, this month and by most improved. At most 20 points a day count, so nobody climbs by rushing."},"four":{"term":"Tiers and skill sets","text":"Bronze from 10 points, then Silver, Gold, Platinum and Diamond at 600. A skill set is complete once every problem of the skill is solved."},"five":{"term":"Suggested for you","text":"Problems one difficulty above where the student’s tests put them, in their weakest skills first. Before any test, the ones they started, then new ones at their level."},"six":{"term":"Practice quizzes","text":"Quizzes a teacher opens for practice, and Echelio’s own, with the answer and its explanation after each question and unlimited tries."}},"faq":{"title":"Questions about practice.","intro":"What teachers and students ask.","one":{"question":"Is practice free for students?","answer":"Yes. Students never pay. Any student can sign up and practise for free, with or without a school, and practice comes with every class, whether it belongs to a school or to a teacher on their own."},"two":{"question":"What do teachers see from practice?","answer":"Which problems each student solved, by difficulty and skill, and when they last practised. Never their code, their failed attempts or a grade."},"three":{"question":"Does practice affect grades or Progress levels?","answer":"No. Practice is never graded and never changes Progress levels. It only earns practice points."},"four":{"question":"How do students earn points?","answer":"1 point for an easy problem, 3 for medium and 5 for hard, on each problem’s first solve, plus 1 for the daily challenge. Up to 20 points a day count on the leaderboard."},"five":{"question":"Can students paste code into practice?","answer":"No. As in tests, the editor blocks paste and dropped text, so every solve is typed by the student."},"six":{"question":"Which languages can students practise?","answer":"JavaScript, Java, Python, PHP and SQL today, with more on the way. Students can filter the challenges by language."}},"cta":"Give your class a reason to code every day."},"fairTesting":{"metaTitle":"Fair online coding exams: anti-cheating and sandboxing","metaDescription":"How Echelio keeps online coding exams fair: sandboxed code, hidden test cases, blocked copy and paste, recorded tab switches, shuffled problems and similar code across the class, side by side.","name":"Fair testing","title":"Online exams you can stand behind.","statement":"You decide what students can run, see and do during a test, and every result comes with what happened. No browser test rules cheating out: Echelio makes it harder, and makes it visible.","card":"Sandboxed code, hidden cases, blocked paste, recorded tab switches and similar code side by side.","points":{"title":"Harder to cheat, easy to see.","intro":"Each control is on by default, and what it records is in the test’s results.","one":{"title":"Copy and paste blocked","text":"During a test, the editor blocks copy, cut, paste and dropped text."},"two":{"title":"Tab switches recorded","text":"Each time a student leaves the test, you see when and for how long."},"three":{"title":"Similar code side by side","text":"After a code test, you see the answers most alike in the class, side by side."}},"steps":{"title":"Fair from the problem to the report.","one":{"title":"Before the test","text":"A problem’s reference solution must pass all of its cases before it can be published, so a failed case is the student’s, not the problem’s."},"two":{"title":"During the test","text":"Code runs in an isolated sandbox with time and memory limits. Problems are shuffled per student, and leaving the page is recorded."},"three":{"title":"After the test","text":"The report keeps the problem versions students answered, every submission and each tab switch with the time away. Each student’s final code is compared with their classmates’, and the closest answers show side by side."}},"details":{"title":"The details.","intro":"Every control, and what it does.","one":{"term":"Sandbox","text":"Student code runs in an isolated Judge0 sandbox, never inside Echelio. Each case gets a fresh execution with time and memory limits."},"two":{"term":"Hidden cases","text":"Students see only whether each hidden case passed, never its input, its expected result or the output."},"three":{"term":"Shuffling","text":"Code tests run from easy to hard and shuffle the problems within each level. Quizzes shuffle questions and answer options per student."},"four":{"term":"Clipboard","text":"Copy, cut, paste and dropped text are blocked in the editor during tests, and paste in practice too."},"five":{"term":"Similar code","text":"Once a test with code problems ends, each student’s final code is compared with their classmates’ answers to the same problem, in JavaScript, Java, Python, PHP and SQL. Renaming, reformatting and comments don’t hide shared code. The starter code, and code most of the class writes, never make two answers alike, and problems with very short answers aren’t compared."},"six":{"term":"Quiz answers","text":"Students move forward only, and correct answers appear only once the test closes, so a finished student can’t pass them on."}},"faq":{"title":"Questions about fair testing.","intro":"What schools ask before giving exams online.","one":{"question":"Can Echelio stop all cheating?","answer":"No browser-based test can. Echelio blocks copy and paste, records every tab switch with the time away, keeps hidden cases out of the browser, shuffles problems and, after a code test, shows you the answers most alike in the class, so cheating is harder and what happened is visible."},"two":{"question":"Is it safe to run student code?","answer":"Yes. Student code never runs inside Echelio. Each case runs in an isolated sandbox, in a fresh execution with time and memory limits, and the results are compared on the server."},"three":{"question":"What does a tab switch record show?","answer":"For each switch, when the student left the test and how long they were away. It appears in the test’s results and in the CSV export."},"four":{"question":"Does Echelio use webcam proctoring?","answer":"No. Echelio does not use the camera, the microphone or screen recording."},"five":{"question":"Can I turn the controls off for a test?","answer":"Yes. Blocking copy and paste, recording tab switches, shuffling and comparing code across the class are settings of each test, all on by default."},"six":{"question":"Does Echelio check whether students’ code is alike?","answer":"Yes, once a code test ends. You see only the few pairs or groups of answers most alike, or that nothing stands out, and can open any of them side by side: shared code is highlighted in matching colours, and cases both students fail the same way are pointed out. Answers can be alike by chance, so it is a signal for you to look at: it never flags anyone or changes a score. Students are told while they take the test, and the comparison runs on Echelio’s servers, without sending code anywhere."}},"cta":"Give a test you can stand behind."},"classDisplay":{"metaTitle":"Live class leaderboard for the projector","metaDescription":"Project a live leaderboard during a coding test or a quiz: the join code, the time left and every student’s progress as it happens, ending on a podium.","name":"Class display","title":"Put the test on the big screen.","statement":"Open the class display on the projector: the class sees the join code, the time left and the leaderboard moving as answers come in. When the test ends, the top three stand on a podium.","card":"A live leaderboard for the projector, ending on a podium.","points":{"title":"Made for the projector.","intro":"The display is its own page, built for a room: big type, a dark stage, and only what the class should see.","one":{"title":"Join code first","text":"Before anyone joins, the display shows the join code in large type, with where to enter it."},"two":{"title":"Live progress","text":"While the test runs, each student’s row shows their rank, a progress track and their score, and slides when they move up."},"three":{"title":"A podium at the end","text":"When the test closes, the top three stand on a podium above the rest of the top ten."}},"steps":{"title":"Three moments of a test.","one":{"title":"Students join","text":"Press Show to class on the test page. The class reads the join code from the screen."},"two":{"title":"The race is on","text":"Rows move as students answer or submit, and the top of the screen counts down the time left."},"three":{"title":"The podium","text":"Once the test ends, the podium rises. Answers still waiting for review keep the board open until they are graded."}},"details":{"title":"The details.","intro":"What the display shows, and what it keeps off the screen.","one":{"term":"Works with","text":"Every test: code tests and quizzes, even quizzes that hide results from students."},"two":{"term":"What it shows","text":"The first ten students, with their rank, name, a progress track, a tick once finished, and their score."},"three":{"term":"What it hides","text":"Per-problem and per-question results, answers, tab switches and anything waiting for review. Those stay on the teacher’s page."},"four":{"term":"Screen","text":"A dark stage scaled to the screen, so ten rows fit a 1080p projector without scrolling."},"five":{"term":"Updates","text":"The board follows the test live, a few seconds behind each answer, with no reload."},"six":{"term":"Who opens it","text":"The teacher, signed in, in a new tab without the app’s navigation."}},"faq":{"title":"Questions about the class display.","intro":"What teachers ask before projecting a test.","one":{"question":"Do students see the leaderboard on their own screens?","answer":"No. The ranking is only on the class display, which the teacher chooses to project. Each student’s screen shows their test, not a ranking."},"two":{"question":"Does the display show students’ answers?","answer":"No. It shows rank, name, progress and score. Answers, per-problem and per-question results and tab switches stay on the teacher’s page."},"three":{"question":"Does it work for quizzes?","answer":"Yes, for every test, code tests and quizzes alike."},"four":{"question":"How many students does it show?","answer":"The first ten, ranked. The full results stay on the test page for the teacher."},"five":{"question":"What about open answers waiting for review?","answer":"They count for nothing until graded. The display says so and keeps following the test until every answer is graded, so the final podium is right."},"six":{"question":"Is there a leaderboard outside tests?","answer":"Yes, for practice: students see their school’s practice leaderboard by points, all time, this month and most improved."}},"cta":"Bring your next test to the big screen."},"students":{"metaTitle":"Echelio for students: free coding tests and practice","metaDescription":"Echelio is free for students, with or without a school. Practise about 945 code challenges in JavaScript, Java, Python, PHP and SQL, with a daily challenge and streaks, and take your class’s coding tests in the browser.","name":"For students","title":"Free for students. Made to make you better.","statement":"Sign up and practise about 945 code challenges, with points and streaks, on your own or with your class. When your teacher or school adds you to a class, you take your tests in the browser and join your school’s leaderboard. You never pay.","card":"Free tests and practice: challenges, streaks, a leaderboard and quizzes.","points":{"title":"Everything you get, for free.","intro":"Students never pay for Echelio: only the teacher or the school does.","one":{"title":"Tests in the browser","text":"Join with a code, write and run real code in a full editor, and see which cases pass. Nothing to install."},"two":{"title":"Practice at your own pace","text":"About 945 code challenges in JavaScript, Java, Python, PHP and SQL, from easy to hard, in English or French. Practice is never graded."},"three":{"title":"A reason to come back","text":"A daily challenge, a streak, a weekly goal, tiers from Bronze to Diamond and your school’s leaderboard."}},"steps":{"title":"How to get started.","one":{"title":"Create your account","text":"Sign up with your email or your Google account, in English or French. Nothing to install."},"two":{"title":"Start practising","text":"Practice opens right away, with or without a school: today’s challenge, suggestions and every code challenge."},"three":{"title":"Join your class","text":"Open the class link or email invitation your teacher sends. Your tests then appear on your home page, and your practice stays with you."}},"details":{"title":"What’s inside.","intro":"Everything a student account includes.","one":{"term":"Code challenges","text":"About 945 in JavaScript, Java, Python, PHP and SQL, each one in English or French: the language of your account. Filter by language, difficulty, skill and status, and find your attempts on each one."},"two":{"term":"Points","text":"1 for easy, 3 for medium and 5 for hard on the first solve, plus a bonus point for the daily challenge."},"three":{"term":"Streak and weekly goal","text":"Keep your streak with one solve a day, and pick a weekly goal of 1, 3, 5 or 10 problems."},"four":{"term":"Leaderboard and tiers","text":"Climb from Bronze to Diamond and, once you are in a class, rank among your school’s students all time, this month and by most improved."},"five":{"term":"Suggested for you","text":"Challenges one level above where your tests put you, in your weakest skills first. Before your first test, the ones you started, then new ones at your level."},"six":{"term":"Your profile","text":"Your stats, an activity calendar, completed skill sets, and milestone cards to share on LinkedIn or Instagram."}},"faq":{"title":"Questions from students.","intro":"What students ask before their first class.","one":{"question":"Is Echelio free for students?","answer":"Yes, always. Students never pay. Anyone can sign up and practise for free, and a teacher or a school pays for the classes and tests."},"two":{"question":"Do I need a teacher or a school to use Echelio?","answer":"No. You can sign up and practise the code challenges and Echelio’s quizzes on your own, for free. Tests come from a teacher: when one adds you to a class, everything you practised stays on your profile."},"three":{"question":"What can my teacher see from my practice?","answer":"Which problems you solved and when, including before you joined their class. Never your code, your failed attempts or a grade."},"four":{"question":"Does practice count toward my grades?","answer":"No. Practice is never graded and never changes your Progress levels. Only the tests your teacher gives count."},"five":{"question":"Which programming languages can I practise?","answer":"JavaScript, Java, Python, PHP and SQL today, with more languages on the way."},"six":{"question":"Can I practise quizzes too?","answer":"Yes. Quizzes your teachers open for practice and Echelio’s own quizzes, with the answer and its explanation after each question, as many tries as you like."}},"cta":"Create your account and start practising."}},"compare":{"metaTitle":"Echelio vs HackerRank, Moodle CodeRunner and Google Forms","metaDescription":"Echelio next to grading by hand or in Google Forms, Moodle with CodeRunner, and hiring platforms like HackerRank, CodeSignal and Codility: progress by skill, who needs attention, practice for each student, hidden tests, multiple choice and code in one test, French and price, for coding schools.","name":"Compare","title":"Less grading. More progress.","statement":"Echelio grades real code on its own, turns every test into a level per skill for each learner, and gives every student their next exercise. Here is how that compares with grading by hand or in Google Forms, Moodle with CodeRunner, and the hiring platforms.","edge":{"title":"Where Echelio goes further.","intro":"Every result becomes the student’s next exercise and the teacher’s next step, without anyone filling in a grid.","one":{"title":"Students get better on their own","text":"Suggested for you picks practice one difficulty above where their tests put them, weakest skills first. A daily challenge, a streak and a weekly goal keep them coding between tests, with nothing for the teacher to prepare."},"two":{"title":"Every learner, skill by skill","text":"Each code test updates every student’s level per skill, across classes and languages. One page per student holds their levels, tests, practice and quizzes."},"three":{"title":"The next step, already prepared","text":"Progress lists who needs attention and why: a falling score, a missed test, skills with no level yet. One click prepares a follow-up test from problems they haven’t solved."}},"table":{"title":"What a school decides on.","intro":"Facts about the other options come from their own websites, checked on {date}. The links are at the bottom of the page.","caption":"Echelio, grading by hand or in Google Forms, Moodle with CodeRunner, and hiring platforms, compared on what a coding school decides on.","corner":"What you need","verdicts":{"yes":"Yes","partly":"Partly","no":"No","notYet":"Not yet"},"details":"Each row in full","options":{"echelio":{"name":"Echelio","kind":"For coding schools"},"manual":{"name":"By hand or Google Forms","kind":"Forms, Classroom, a spreadsheet"},"moodle":{"name":"Moodle + CodeRunner","kind":"Open-source LMS and plugin"},"hiring":{"name":"HackerRank, CodeSignal, Codility","kind":"Hiring platforms"}},"rows":{"skills":{"label":"Level per skill, built automatically","echelio":"Every code test updates each learner’s level per skill. No grid to fill in.","manual":"Classroom’s learning goals score the work you tag and grade.","moodle":"Competency frameworks, rated by teachers or by activity completion.","hiring":"A report per candidate and per test, for hiring decisions.","detail":{"echelio":"Yes, automatically. Every code test updates each learner’s level per skill, across classes and programming languages, with no grid to fill in by hand.","manual":"Classroom’s learning goals turn the work you tag and grade into a score per goal. The code itself is graded by hand.","moodle":"Possible with competency frameworks: teachers rate each competency, or link it to activity completion.","hiring":"A report per candidate and per test, built for hiring decisions."}},"attention":{"label":"Who needs attention, and why","echelio":"A list of learners with the reason for each, and a follow-up test in one click.","manual":"Classroom analytics flags missed work and grade changes, in paid editions.","moodle":"An at-risk model built on course activity, once enabled and trained.","hiring":"Reports per candidate and per test, made for hiring decisions.","detail":{"echelio":"Yes. Progress lists the learners who need attention, each with the reason: a latest score well below their average, skills with no level yet, a missed test or a week without work. Create test then picks problems they haven’t solved, at the right difficulty.","manual":"In part. Classroom analytics, with Education Plus or the Teaching and Learning Upgrade, highlights students who might need support, such as missed assignments or changes in grades.","moodle":"In part. Moodle’s analytics can predict students at risk of dropping out, from their activity in the course. The model needs course dates and finished courses to learn from.","hiring":"In part. Reports per candidate and per test, built for hiring decisions. CodeSignal also offers universities program-level reporting."}},"practice":{"label":"Practice picked for each student","echelio":"Suggested from their weakest skills, with a daily challenge and streaks. Free.","manual":"What the teacher shares. Classroom practice sets need a paid edition.","moodle":"Practice quizzes the teacher builds, with the attempts they allow.","hiring":"Separate sites for developers, apart from the school’s tests.","detail":{"echelio":"Yes. Suggested for you picks challenges one difficulty above where the student’s tests put them, weakest skills first, from about 945 code challenges. A daily challenge, a streak and a weekly goal bring them back. Free for every student, with or without a school.","manual":"In part. The exercises the teacher shares. Classroom practice sets come with paid editions.","moodle":"In part. Practice quizzes the teacher builds in the course, with as many attempts as they allow.","hiring":"In part. Separate sites for developers: CodeSignal Learn, HackerRank’s practice and Codility’s lessons, apart from the school’s own tests."}},"hiddenTests":{"label":"Real code, graded by hidden tests","echelio":"Public and hidden cases; hidden data never reaches the browser.","manual":"Forms grades choices and short answers. Code is graded by hand.","moodle":"CodeRunner runs each answer against tests, which can be hidden.","hiring":"All three let test cases stay hidden from candidates.","detail":{"echelio":"Yes. Every submission runs against public and hidden cases, and hidden data never reaches the browser.","manual":"No. Forms grades choices and short answers against a key; code is read and graded by hand.","moodle":"Yes. CodeRunner runs each answer against the question’s tests, and its guide recommends at least one hidden case.","hiring":"Yes. All three let test cases stay hidden from candidates."}},"mixedTests":{"label":"Multiple choice and code in one test","echelio":"Code problems and a quiz in two parts, with one score. You set the split.","manual":"One form can hold both, but code is graded by hand.","moodle":"CodeRunner questions sit in a quiz with any other question type.","hiring":"A test can mix coding and multiple-choice questions.","detail":{"echelio":"Yes. A Code and quiz test holds code problems and one of the teacher’s quizzes, in two parts, in the order the teacher picks. Code is graded against public and hidden cases, and the quiz grades itself except open answers, which wait for the teacher’s review. The two parts make one score: the teacher sets how much the code part counts, from 10% to 90% (50% by default). One time window covers both parts, and one setting shows or hides the results.","manual":"In one form, yes, but only choices and short answers grade themselves.","moodle":"Yes. CodeRunner questions sit in a Moodle quiz next to multiple choice, short answer and the other question types.","hiring":"Yes. A test can mix coding and multiple-choice questions."}},"french":{"label":"French interface","echelio":"The whole app, for teachers and students, AI included.","manual":"Google Classroom is available in French.","moodle":"Moodle fully; CodeRunner’s own screens about half.","hiring":"HackerRank offers Canadian French; Codility translates some task text.","detail":{"echelio":"Yes, the whole app, for teachers and students. Each person picks their language, and AI drafts quizzes in French.","manual":"Yes. Google Classroom is available in French.","moodle":"Yes for Moodle, whose French pack is complete. CodeRunner’s own screens are about half translated.","hiring":"In part. HackerRank can show its test screens in Canadian French; Codility translates some task descriptions."}},"price":{"label":"Price model","echelio":"{teacherMonthly} a month per teacher, for one class, after a 14-day free trial. Schools pay per student a year, from {perStudent}. Students never pay.","manual":"No charge in Google Workspace for Education Fundamentals, for qualifying institutions. The cost is teacher time.","moodle":"Free, open-source software. You pay for hosting, and code runs on a Jobe server you install and run yourself.","hiring":"Per candidate. HackerRank and CodeSignal start at $79 a month, billed yearly, for 60 attempts or credits a year; Codility at $1,200 a year for 120 invites."},"audience":{"label":"Built for","echelio":"Coding schools, bootcamps and teachers who test and follow classes.","manual":"Every subject and every school, not code in particular.","moodle":"Schools, universities and companies that run their courses in Moodle.","hiring":"Companies hiring developers. CodeSignal also sells career-readiness programs to academic institutions."}}},"bestFor":{"title":"Which one fits.","intro":"Each option is the right choice for someone. Here is who.","label":"Best for","echelio":"Coding schools and bootcamps that test code every few weeks and want every student to improve between tests: a level per skill for each learner, a list of who needs help, and practice picked for each student. Theory and code can share one test, with one score. Hosted, in English or French, with nothing to install.","manual":"Theory quizzes, a few small classes, or schools already set on Google Workspace. It costs nothing extra and every teacher knows it, but each code answer is read and graded by a teacher, and skills are scored only on the work they tag and grade.","moodle":"Universities and schools that already run Moodle, with someone to host it and a Jobe server, and teachers who write or import their own questions and tests. CodeRunner supports more languages, including C, C++ and Pascal, and has no licence fee.","hiring":"Companies screening job candidates, and career services preparing students for those tests. Large question libraries and strong proctoring, priced per candidate, so every student in every test counts against the plan."},"faq":{"title":"Questions schools ask.","intro":"What schools type when they look for another way to test code.","one":{"question":"What is a good HackerRank alternative for schools?","answer":"Echelio is made for coding schools rather than hiring. A class joins a test with a code, students write real code in the browser, and each submission is graded against hidden test cases. Results become a level per skill for every learner, the price is per teacher or per student a year rather than per candidate, and students practise for free between tests, starting with their weakest skills."},"two":{"question":"Is Echelio an alternative to Moodle CodeRunner?","answer":"Yes, for schools that want auto-graded code tests without running Moodle and a Jobe server. Echelio is hosted, comes with about 945 ready problems, and turns every result into a level per skill and a list of who needs attention, without rating each competency by hand. As in a Moodle quiz, code problems and multiple choice can share one test, here with one score whose split the teacher sets. CodeRunner suits schools that already run Moodle and need languages other than JavaScript, Java, Python, PHP and SQL today."},"three":{"question":"Can Google Forms grade code?","answer":"No. Google Forms grades multiple choice, checkboxes, dropdowns, grids and short answers against an answer key. Code typed into a form is graded by hand. Echelio runs each submission against the problem’s test cases instead, hidden ones included."},"four":{"question":"How does Echelio’s price compare with HackerRank or Codility?","answer":"HackerRank and CodeSignal start at $79 a month, billed yearly, for 60 candidate attempts or credits a year, and Codility’s Starter plan costs $1,200 a year for 120 invites. Echelio’s Teacher plan is {teacherMonthly} a month for one class of up to 30 students, and schools pay per student a year, however many tests they give. Students never pay."},"five":{"question":"Is there a coding test platform in French?","answer":"Yes. Echelio’s whole interface is in French as well as English, for teachers and students, and its AI drafts quizzes in either language. Each person picks their own language, so one class can use both."},"six":{"question":"Can students get better without a teacher?","answer":"Yes. From their test results, Suggested for you picks practice one difficulty above their level, in their weakest skills first. Every submission is checked against public and hidden cases, and a daily challenge, a streak and a weekly goal keep them coding. Teachers see which problems each student solved and when, with nothing to prepare."}},"sources":{"title":"Sources.","intro":"Checked on {date}, on each product’s own website. Prices are in US dollars, before tax. Seen something out of date? Tell us."},"cta":"Try Echelio with one class."},"mock":{"practice":{"streak":"day streak","days":{"mon":"M","tue":"T","wed":"W","thu":"T","fri":"F","sat":"S","sun":"S"},"challenge":"Today’s challenge","challengeTitle":"Reverse each word","bonus":"+1 bonus","points":"points"},"fair":{"title":"Test events","paste":"Paste blocked","tab":"Left the test","back":"Back after {time}","hidden":"Hidden case 3 · data not sent","submitted":"Submitted · 7 of 8 cases"},"leaderboard":{"title":"Leaderboard · This month","you":"You"}}}}