CS++ — Learn Computer Science by Building Real Things
Nine free computer science courses — AP CSP, AP CSA, AP Cybersecurity, Java, Python, Data Structures and more — plus free in-browser Java, Python and web IDEs with live collaboration, coding games and AP practice — all running on any device, no installs. From CS++, founded by a 20+ year AP CS teacher.
Common questions
Is CS++ free?
Yes. Every lesson in all nine courses is free with a free account, and creating that account costs $0 — no credit card, no trial that converts, and no paid registration tier. No course on csplusplus.com is unit-gated. The CS++ iOS apps are a separate optional product with their own App Store pricing; that is not the price of the website.
What else is free with an account?
631 printable handouts and worksheets, an editable slide deck for each of the 86 units, the in-browser Java, Python and web IDEs, the coding games, the first mock exam or practice final in every course, and teacher classrooms with rostering, progress tracking and the assignment builder.
What does the $9.99 Student Membership add?
Mock exams 2 through 5 in every course, full quiz banks with no daily multiple-choice limit, AI grading on free-response questions, and 50 AI tutor questions a day instead of 5. It is a one-time payment with no subscription and no auto-renewal, and it does not buy course access — the courses are already free.
What do schools pay for?
Seat-based plans: Class $299 a year for one classroom of up to 40 students, Department $999 a year, District $1,999 a year. They add the teacher toolkit — proctored lockdown quizzes, AI bulk grading, cohort analytics, LMS grade passback, the 328 teacher answer keys and editable Word versions of the printables — plus a full membership for every seated student. Teaching without any of that costs nothing.
Who makes CS++?
CS++ is published by Yellow Dart Publishing (Kevin P Hare LLC), founded by a 20+ year AP Computer Science teacher who wrote a published AP CSP textbook and still teaches AP CS today. The company started in 2018. CS++ is not affiliated with, endorsed by, or sponsored by the College Board.