Autograders, code history, and school privacy compliance, all in the same IDE your students already use to write and run code. No downloads required.
No more hand-grading 30 nearly-identical programs. CodeHS runs pre-written or custom test cases the moment a student clicks Run, flagging exactly what passed and what didn't.
My loop runs but everything prints on one line. What am I missing?
Good catch. Look at what your print adds between values by default, then tell it to start a new line each time.
Stuck students message you from inside the editor, with the exact program attached. You reply in context, so there's no email thread and no guessing which line they mean.
You decide whether to turn on an AI tutor that nudges students in the right direction on their own code, never handing over the answer. And AI grading drafts a score and feedback on rubric work for you to review, adjust, and post.
Stuck on the guessing game, it never says I win even when my number is right.
What type does the input come back as? A typed "7" and the number 7 aren’t equal yet, try converting before you compare them.
CodeHS saves every version as students work, so you can see how a program came together. Pasted code is flagged automatically, so a block that appears all at once stands out, giving you the context for an honest conversation.
Paste flagging, AI hints, and AI-suggested grades are part of CodeHS Pro.
Beginners build real programs with drag-and-drop blocks, then flip the same project to text when they're ready. Same concepts, no syntax errors to fight on day one.
Blocks, copy/paste prevention, editor engine: the IDE settings for each class are yours to set. Block-based coding isn’t a phase students age out of. It’s a switch you turn on when it helps and off when they’re ready for text.
One IDE with everything teachers need to run a great class. No plugins, no setup, no extra cost.
Walk through programs line-by-line to find bugs in your code with the built-in debugger.
Share programs and generate embed code for your LMS, website, or classroom slides.
CodeHS saves every keystroke to the cloud, so students never lose their work.
Reference syntax rules and language docs without leaving the IDE.
Download your code any time. It works in other IDEs too.
The CodeHS IDE meets school and district privacy and data requirements, including COPPA and FERPA.
No account is required to try the IDE. Students can start coding immediately for free. For classroom features like autograders, code history, and teacher messaging, a free CodeHS account is needed.
Yes. The CodeHS IDE runs entirely in the browser with no downloads, installs, or plugins. It works on Chromebooks, Windows, Mac, iPad, and any device with a modern browser.
The CodeHS IDE supports 10+ languages including JavaScript, Python, Java, HTML/CSS, C++, and SQL, plus Karel and Turtle for beginners. New languages are added regularly.
Autograders run a set of test cases against a student's program the moment they click Check Code. You can use CodeHS's pre-built tests or write your own. Results show which tests passed or failed with a message explaining why.
Yes. The CodeHS IDE is free to use: anyone can write, run, and save code in the browser, no account required. A free teacher account adds classes, assignments, student messaging, in-editor code history, and built-in autograders that give students instant feedback. CodeHS Pro adds AI grading, AI student hints, and academic-integrity tools.
Yes. CodeHS is COPPA and FERPA compliant and has signed Student Data Privacy Consortium (SDPC) agreements with many districts. We never sell student data and provide data processing agreements for schools that require them.
Join thousands of CS teachers using CodeHS to autograde, give feedback, and track student progress, all without leaving the editor.
Free to start. Nothing to install.
