AP Computer Science Principles Practice Test
AP Computer Science Principles introduces the foundational ideas of computing: how data is represented, how the internet works, and how programs solve problems. The 2026 exam is fully digital — 70 MCQs in 120 minutes (70%) and two written-response prompts in 60 minutes (30%) tied to your Personalized Project Reference.
Practice AP Computer Science Principles multiple-choice questions in a digital interface modeled on the real College Board Bluebook exam. Upload your own PDF or solve a published mock test, then get instant AI scoring and detailed answer explanations. Free for all students.
Exam format
70
questions
180
minutes
Fully digital (Bluebook app)
| Section | Questions | Time | Score weight |
|---|---|---|---|
Section I: End-of-Course Multiple Choice 57 single-select + 5 reading-passage (computing innovation) + 8 multiple-select (choose 2 answers). | 70 | 120 min | 70% |
Section II: Written Response + Create Performance Task 2 written-response prompts (4 sub-prompts) referencing your Personalized Project Reference, plus the through-course Create PT (program code, video, PPR — 9 hours in class, due Apr 30, 2026). | 2 | 60 min | 30% |
Course units and exam weights
- Big Idea 1: Creative Development10-13%
- Big Idea 2: Data17-22%
- Big Idea 3: Algorithms and Programming30-35%
- Big Idea 4: Computer Systems and Networks11-15%
- Big Idea 5: Impact of Computing21-26%
Source: College Board AP Students Course and Exam Description.
Published AP Computer Science Principles practice exams
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Upload the first examHow AI scoring works
When you upload an AP Computer Science Principles PDF without an answer key, our system uses Google Gemini to read the document, extract every multiple-choice question, and generate the correct answers. The first attempt seeds the answer key; later attempts use the saved key, so AI runs only once per exam.
Each question is scored against the stored key in real time. After you submit, you can review every wrong answer with an AI-written explanation that grounds the reasoning in the original PDF page.
AI-generated keys may have errors. Always cross-check answers against an official source for high-stakes review.
Computer Science Principles FAQ
- Is AP CSP easier than AP CSA?
- Yes. AP CSP is broader and conceptual, while AP CSA is deep in Java syntax. CSP has one of the highest pass rates among AP exams.
- Does AP CSP require coding?
- Some coding is required, but the exam uses pseudocode rather than a specific language. The Create Performance Task is completed in class with any language you choose.
- How long is the AP CSP exam?
- The end-of-course exam is 3 hours total — 70 multiple-choice questions in 120 minutes plus a 60-minute written-response section that uses your Personalized Project Reference. The Create PT is completed in class before the exam (due Apr 30, 2026).