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Computer Science Principles Exam Prep

AP Computer Science Principles study planner for May 2027

Set your hours a week and how sure you are of each Big Idea. The planner weights them by the exam and lays out the weeks to May 14, 2027.

Hours a week for AP Computer Science Principles
Big Idea 1: Creative Development 10–13%
Big Idea 2: Data 17–22%
Big Idea 3: Algorithms and Programming 30–35%
Big Idea 4: Computer Systems and Networks 11–15%
Big Idea 5: Impact of Computing 21–26%

30 weeks to the exam on May 14, 2027

Start with Big Idea 3

Big Idea 3: Algorithms and Programming: 36.4 of your 120 hours.

Hours per Big Idea
Big IdeaHoursAbout this many questions
Big Idea 3: Algorithms and Programming36.423 of 70
Big Idea 5: Impact of Computing26.316 of 70
Big Idea 2: Data21.814 of 70
Big Idea 4: Computer Systems and Networks14.69 of 70
Big Idea 1: Creative Development12.98 of 70

Week by week

  1. Weeks 1–9 · Oct 13Big Idea 3: Algorithms and Programming
  2. Week 10 · Dec 15Big Idea 3: Algorithms and Programming, Big Idea 5: Impact of Computing
  3. Weeks 11–15 · Dec 22Big Idea 5: Impact of Computing
  4. Week 16 · Jan 26Big Idea 5: Impact of Computing, Big Idea 2: Data
  5. Weeks 17–21 · Feb 2Big Idea 2: Data
  6. Week 22 · Mar 9Big Idea 2: Data, Big Idea 4: Computer Systems and Networks
  7. Weeks 23–24 · Mar 16Big Idea 4: Computer Systems and Networks
  8. Week 25 · Mar 30Big Idea 4: Computer Systems and Networks, Big Idea 1: Creative Development
  9. Weeks 26–28 · Apr 6Big Idea 1: Creative Development
  10. Weeks 29–30 · Apr 27Timed practice exam, then review every miss

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Questions people ask

Which Big Idea is worth the most on the AP Computer Science Principles exam?

Algorithms and Programming, at 30–35% of the multiple choice.