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Web Student Guide

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classroom50-sync[bot] edited this page Sep 7, 2026 · 21 revisions

Web Student Guide

This guide walks you through using Classroom 50's web app at classroom50.org as a student. Prefer the terminal? See the CLI Student Guide.

The path: join your classroom's organization, sign in, accept an assignment, do the work and submit, then view your score.

Tip

Have feedback, a bug, or an idea? Raise it in the project's discussions.

Before you start

You need a GitHub account. Classroom 50 runs entirely on GitHub.

Join your classroom

Your classroom belongs to a GitHub organization. When your teacher invites you, GitHub emails you an invitation. Accept it in any of these ways:

  • Follow the link in the email.
  • Sign in to Classroom 50. The home page lists your pending invitations. Expand the list and click Accept and open.
  • Open the assignment link your teacher shared. The accept page accepts the invitation for you before it shows the assignment.

If you open an assignment link before you've been invited, the page says Not a member yet. Ask your teacher to add you to the classroom roster and send you an invitation. When it arrives, accept it, then click Check again.

Sign in

At classroom50.org, click Sign in with GitHub and authorize Classroom 50 in the window that opens.

If the browser sign-in doesn't work for you, expand Other sign-in methods and click Use a device code instead. Copy the one-time code, open the GitHub verification page, paste the code there, and come back. Classroom 50 detects the authorization within a few seconds.

Find your assignments

After signing in, the home page lists your Classroom 50 organizations.

  1. On the organization for your classroom, click Open.
  2. On the My classrooms page, find your classroom and click View assignments.

The Assignments page lists every assignment your teacher has released, with its type (Individual, Group, or Group (legacy)), due date, and status (Accepted or Not accepted). Click Accept assignment to accept one. Once you have, the button reads View my submission (or View group submission on a group assignment).

Some assignments open only from the invite link your teacher shares. After you accept one, it appears in the list too.

Accept an assignment

Open the assignment link your teacher shared, or click Accept assignment on the Assignments page. The accept page shows the assignment's type and due date, its details, who you're signed in as, and the name of the repository you'll get. Click Accept assignment.

Accepting creates a GitHub repository for you, named after the classroom, the assignment, and your username, for example cs50-fall-2026-hello-alice. A checklist tracks the setup. When it finishes, click Open repository to see your repository on GitHub, or Go to my classroom to return to your assignments.

If you open the link again later, the page says you've already accepted and offers Open repository. If autograding isn't running or setup files are missing, expand Having trouble? and click Re-run setup to repair your repository.

Note

Your repository is private unless your teacher configured the assignment to create public repositories. In that case the accept page warns you before you accept: This repository will be public, so anyone on the internet can see your work, including your code, commits, and name. If your organization doesn't let you create public repositories, a private one is created instead.

You can't accept when the page reports one of these:

  • This assignment is locked. Your teacher has locked it. Check back later or ask your teacher to unlock it.
  • Submissions are closed. Your teacher has closed it to new submissions. If you already accepted, your repository still opens as usual.
  • This assignment isn't available to you. You aren't enrolled in this classroom. Ask your teacher if you think this is a mistake.
  • Assignment not found. The link may be incorrect, or the assignment may not be published yet. Check the address with your teacher.

Submit your work

You submit by committing and pushing to the repository you got when you accepted. Your My submission page (see View your submissions) includes Submit from the command line, a short guide with copyable commands: clone your repository once, then run gh student submit from inside it. For the full command-line walkthrough, see Submit in the CLI Student Guide.

Submit-only assignments

Some assignments grade only on submit: pushing saves your work but doesn't grade it, and the commit's check says so. To be graded, run gh student submit from inside your repository, or push a tag under submit/:

git tag submit/final && git push origin submit/final

Some assignments also name milestone tags (for example phase1; your teacher tells you which). Push one to grade that commit:

git tag phase1 && git push origin phase1

If your teacher changes an assignment's grading setup, run git pull before your next push.

Group assignments

Some assignments are done in a group. The Assignments page shows the type as Group or Group (legacy); the accept page labels both Group assignment.

For a Group assignment, your group shares one repository, named after the classroom, the assignment, and a group number, for example cs50-fall-2026-project-group-3. The repository is created when the first member accepts, and every member gets push access through the group's GitHub team. How you get into a group depends on the assignment:

  • Teacher-formed groups. The accept page says You're not in a group yet. Ask your teacher to add you to a group, then open the link again.
  • Student-formed groups. Under Join a group, the accept page lists the existing groups with their member counts. Click Ask to join to open a group's page on GitHub and select Request to join there (the group reviews requests on that page, where you can also cancel yours). Once you're in, come back and click Check again. Or start your own group: fill in Group name (optional) and click Create group. You become its first member and can add teammates after you accept.

After accepting, click Manage my group on the accept page (or Manage group in the assignment's left menu) to see your group and its members. In a teacher-formed group the list is read-only; ask your teacher for changes. In a student-formed group:

  • The student who created the group maintains it. Only they can add a teammate by GitHub username (click Add), remove members, and Review join requests on GitHub. They can't leave the group; the teacher can move them instead.
  • Other members can click Leave group. You type the group's name to confirm, because you lose access to the group's repository (your work stays with the group), and rejoining takes another request and approval.

The group page also shows how many members the group has against the assignment's maximum group size. If the group has more members than allowed (members can be added directly on GitHub, outside Classroom 50), the page shows a warning that your teacher can see too. Remove members until the group is within the limit, or ask your teacher to.

Legacy group assignments

For an assignment shown as Group (legacy), there is no group team:

  1. One teammate accepts and creates the shared repository, named after them.
  2. That teammate adds the others as collaborators.

To add collaborators, click Edit collaborators on the accept page, or open Manage group in the assignment's left menu and click Manage collaborators. In the Group collaborators dialog, add each teammate by GitHub username, then click Save collaborators. Only the teammate who created the repository can manage collaborators, and the dialog enforces the assignment's maximum group size.

Collaborators must be members of the organization. Only collaborators who are enrolled in the classroom receive the group's score.

View your submissions

Open the assignment and click My submission in the left menu (on a group assignment, Group submission). A callout at the top shows whether you've submitted and when. If you haven't, click Show me how to submit to open the command-line guide. Below it, a table shows your repository (on a group assignment, the Group repository, with your teammates listed above it), how many submissions you've made, and when you last submitted. The row's actions open your repository on GitHub, list your submissions (View submissions), and, once a submission has been graded, open the latest result (View autograder details). In the submissions list, each graded submission has a View score link. On a group assignment, the list also names the teammate who made each commit.

The Assignments page offers the same views: View my submission, or on a group assignment View group submission and View group.

Note

Scores live on your repository's GitHub Releases: each graded submission publishes a Release with the score and a per-test breakdown. Classroom 50 doesn't display the score inside the app, so View autograder details and View score take you to the Release. Your teacher may also leave comments on your feedback pull request.

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