AP Biology Score Calculator
Enter your practice-test results to predict your AP score from 1 to 5. Drag the sliders or type your points — the estimate updates instantly.
How the Bio exam is scored
60 multiple-choice questions (50%) and 6 free-response questions — 2 long and 4 short — for 50%.
| Section | Points | Weight |
|---|---|---|
| Multiple choice | 60 | 50% |
| Free response | 34 | 50% |
Estimated Bio score cutoffs
The College Board sets new cutoffs each year. These estimates come from historically released scoring worksheets — use them as a guide, not a guarantee.
| AP score | Weighted composite (approx.) |
|---|---|
| 5 | 68%+ |
| 4 | 55%–67% |
| 3 | 42%–54% |
| 2 | 30%–41% |
| 1 | Below 30% |
3 ways to raise your Bio score
- 1
Most questions are data-driven: practice reading graphs and identifying controls and variables quickly.
- 2
Answer exactly the verb asked — "describe," "explain," and "justify" earn points differently.
- 3
Know how to calculate chi-square, Hardy-Weinberg, and standard error of the mean.
Common questions
How is the AP Biology exam scored?+
60 multiple-choice questions (50%) and 6 free-response questions — 2 long and 4 short — for 50%. Section scores are combined into a weighted composite, which the College Board converts to a score from 1 to 5.
What composite score do I need for a 5 on Bio?+
Cutoffs change every year. Based on historically released scoring, a 5 has typically required roughly 68% of the weighted composite, a 4 about 55%, and a 3 about 42%. Treat these as estimates.
How accurate is this AP score calculator?+
It uses the official section weights and estimated cutoffs from past exams, so it gives a good ballpark — usually within one score point. Your actual score depends on that year's curve.
When do AP scores come out?+
AP scores are typically released in early July through your College Board account.