Score your AP Computer Science Principles exam with the official College Board weights: 70 multiple-choice questions worth 70% and the Create Performance Task (6-point rubric) worth 30%.
| Input | Result |
|---|---|
| 55 of 70 MCQ, 5 of 6 FRQ points, target 70 | Composite 80.0%, 10.0 points above target |
| 60 of 70 MCQ, 5 of 6 FRQ points, target 70 | Composite 85.0%, 15 points above target |
| 42 of 70 MCQ, 3 of 6 FRQ points, target 70 | Composite 57.0%, needs 13 more MCQ answers or 3 more rubric points |
College Board publishes a fixed structure for AP Computer Science Principles. Section I is 70 multiple-choice questions in 2 hours and carries 70% of the exam score. Section II is 1 free-response questions in 60 minutes on exam day (plus 9 hours of in-class work for the Create task) and carries 30%. The exam runs 3 hours on exam day (120 minutes of multiple choice plus 60 minutes of written response), plus the in-class Create task in total, and it is a fully digital exam in the Bluebook app.
| Section | Questions | Timing | Weight |
|---|---|---|---|
| Section I, Multiple Choice | 70 | 2 hours | 70% |
| Section II, Free Response | 1 | 60 minutes on exam day (plus 9 hours of in-class work for the Create task) | 30% |
The second component of CSP is the Create Performance Task, your own program, a video of it running, and the Personalized Project Reference, scored on a 6-row rubric. The two written response questions you answer on exam day are scored with it, and the whole component carries 30% of the exam score. One extra correct multiple-choice answer is worth 1.00 composite points; one extra free-response point on a 6-point Section II is worth 5.00 points.
Free-response totals differ between practice exams, so enter the rubric total from the paper you are scoring rather than assuming a fixed number.
Every AP exam is scored in two stages. Your raw score, the number of multiple-choice questions you got right and the rubric points your written answers earned, is weighted by the official section weights into a composite score, and that composite is then mapped onto the 1–5 scale.
The second stage is the part no calculator can reproduce. College Board does not publish the composite cut points for any AP subject, and it adjusts them every year through a statistical process called equating, so that a 3 means the same thing even if one year's exam was slightly harder than another's.
We checked the cut points that prep sites publish and they do not agree with each other: one puts the 3-line at a 55% composite, another at 42%, another at 50%. When published estimates disagree by that much, quoting any one of them as a prediction would be guessing. So this page does the part that is actually deterministic, your weighted composite, computed from the official weights, and lets you set your own target and see exactly how much more you need to reach it.
Your raw score has two parts: the number of multiple-choice questions you answered correctly, and the rubric points your free-response answers earned. Each part is scaled to its section weight, and the two weighted parts are added into a composite score out of 100. That composite is then placed on the 1 to 5 scale.
Not exactly. College Board does not publish the composite cut points for this subject, and it recalculates them every year through equating to keep scores comparable across exam forms. What you can work out exactly is your weighted composite percentage, which is what the calculator above gives you, and that is the number to track while you study.
There is no published answer, and prep publishers who publish estimates disagree with each other by more than ten percentage points. Rather than quote a number that would be a guess, this page lets you enter your own target composite and tells you how many more correct answers or rubric points it takes to get there.
No. AP multiple-choice questions are scored as right or wrong with no penalty for a wrong answer, so a blank and a wrong answer cost exactly the same. Always fill in an answer, and always write something for every free-response part, rubric points are awarded for partial credit.
College Board publishes the exam structure for every AP subject on its official course pages: the number of questions, the timing, and the percentage of the exam score each section carries. Those weights are used here unchanged.