AP CSA FRQ practice
with instant feedback.

Students can practice free-response questions, submit their answers, and get targeted feedback to help them improve. Starting with AP CSA FRQs and growing into a broader CS classroom platform.

No account needed. Free for everyone.

Question of the Day

One AP CSA question a day,
on autopilot.

A free daily multiple-choice question your students answer in under a minute, with instant feedback and worked explanations.

No sign-in required. Pick from a few premade calendars and start right away.

When you sign in and create a class

Choose a calendar for your class

Pick from many premade calendars that fit a year-long or semester-long class and your start date, so the daily question follows your class's timeline.

Weekly & by-topic analytics

Track participation and accuracy each week, and see exactly which topics to revisit so students keep improving.

No sign-in needed

What value is printed?

System.out.println(17 / 5 + 17 % 5);

What you get

Everything you need for CS education

Interactive code editor

In-browser editor with syntax highlighting and real execution. No install, no setup, works on Chromebooks.

Personalized feedback

Instant, tailored hints when students get stuck, without giving away the answer.

Progress monitoring

Per student, assignment by assignment, unit by unit. See exactly who is caught up and who is stuck.

Class analytics

Score distributions per assessment, comparisons across classes, and summaries of what to revisit next.

Sharing soon

Question library

100+ FRQs and 100+ MCQs out of the box. Favorites, versioning, sharing with other teachers, and optional AI-suggested grading where you always make the final call.

On the roadmap

Structured curriculum

A full AP CSA and CSP scope and sequence with units, learning objectives, pacing guides, and aligned assessments.