AP Biology Score Calculator 2026
Estimate your official AP Biology score (1–5) by entering your expected Multiple-Choice (60 MCQs) and Free-Response (6 FRQs) scores.
AP Biology Interactive Score Calculator
Section I: Multiple Choice
60 Questions Total • 90 Minutes • 50% Exam Weight
Section II: Free Response Questions (6 FRQs)
2 Long FRQs (16pts) + 4 Short FRQs (16pts) = 32 Max Pts • 90 Mins • 50% Weight
Calculated AP Biology Score
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Essential AP Biology Equations & Mathematical Skills
1. Chi-Square ($\chi^2$) Goodness-of-Fit Test
$\chi^2 = \sum \frac{(O - E)^2}{E}$
Evaluates whether observed genetic ratios differ significantly from expected Mendelian ratios. Compare calculated $\chi^2$ against critical values at $p = 0.05$ ($df = n - 1$).
2. Hardy-Weinberg Equilibrium Formulas
$p + q = 1 \quad \text{and} \quad p^2 + 2pq + q^2 = 1$
Models allele ($p, q$) and genotype ($p^2$ dominant, $2pq$ heterozygous, $q^2$ recessive) frequencies in ideal non-evolving populations.
Frequently Asked Questions (AP Biology PAA)
What composite score is needed to earn a 5 on the AP Biology exam?
Historically, a composite score of roughly 92 to 95 out of 120 total weighted points (~77%-79%) is required to earn an AP Score 5 on the AP Biology exam.
How is Section I (Multiple Choice) structured on the AP Biology exam?
Section I consists of 60 multiple-choice questions (individual questions and set-based stimulus questions) taken in 90 minutes, accounting for 50% of your total exam score.
How is Section II (Free-Response Questions) formatted?
Section II features 6 questions taken in 90 minutes: 2 long free-response questions (8-10 points each) and 4 short free-response questions (4 points each), accounting for 50% of your total exam score.
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