AP Computer Science Principles Practice Tests
Free AP CS Principles practice tests covering computing systems, data, and algorithms.
AP Computer Science Principles is organized into 5 units, starting with Creative Development and ending with Impact of Computing. Our practice content is aligned to the current College Board Course & Exam Description so the questions you see here cover the same skills as the real exam, including a timed full-length practice that mirrors the actual paper.
There are 11 practice tests for AP Computer Science Principles right now, sorted by difficulty so you can warm up easy or push into exam-level questions. Every multiple-choice question comes with a written explanation and a rationale for each wrong choice, and each unit has a worked-solutions page you can read straight through.
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Timed practice with 70 questions mirroring the real exam structure.
FRQ analyses and walkthroughs by year.