AP Computer Science A vs AP Computer Science Principles
CSA or CSP? Compare Java programming depth, exam format, Create Performance Task, pass rates, and which to take first.
Choosing between AP Computer Science A and AP Computer Science Principles? They sound similar but test very different skills.
Quick Comparison
| Feature | AP CSA | AP CSP |
|---|---|---|
| Focus | Java programming | Computing concepts broadly |
| MCQs | 40 (50%) | 70 (70%) |
| FRQ/Project | 4 Java coding FRQs | Create Performance Task (30%) |
| Format | Fully digital | Fully digital |
| Best for | Future CS majors | First computing course |
| Pass rate (2025) | ~67% | ~64% |
AP Computer Science A
- Write Java code: classes, arrays, ArrayList, 2D arrays, inheritance
- FRQs require working programs typed in Bluebook
- Heavier on Units 3–4 (conditionals, iteration) and Unit 6 (arrays)
CSA complete guide · Score calculator
AP Computer Science Principles
- Covers big ideas: data, algorithms, internet, impact of computing
- Create PT (due April 30) = 30% of score — a programming project + video
- MCQs test concepts, not language-specific syntax
CSP complete guide · Score calculator
Which Should You Take?
Take CSP if: You've never coded, want a broad intro, or are exploring CS.
Take CSA if: You know Java (or learn quickly), want programming depth, or plan a CS major.
Take both if: Your schedule allows — CSP in one year, CSA the next.
Free Resources
- College Board AP CSA CED
- College Board AP CSP CED
- Practice tests on our platform
Sources: College Board AP CSA and CSP Course and Exam Descriptions. Verified July 2026.
Frequently asked questions
Which is harder, CSA or CSP?
CSA requires Java programming skills. CSP is broader and less coding-intensive. Pass rates are similar (~64–67%).
Can I take both?
Yes. Many students take CSP first (intro to computing) then CSA (Java programming).
Which is better for CS majors?
CSA is more valued for CS major credit. CSP introduces computing concepts but is less programming-focused.