AP Biology score calculator

Enter how many multiple-choice questions you got right and the points you earned on each free-response question. The calculator weights each section the way College Board does and shows your composite and an estimated AP score range.

Subject:AP Biology

Maths and statistics

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Multiple choice

Wrong and blank answers cost nothing; every correct answer is one point.

Section IMultiple Choice · Correct answers

/ 60

Free-response questions

Score each answer against College Board's scoring guidelines, then enter the points.

Section II · Free Response

Question 1Interpreting and Evaluating Experimental Results

/ 9

Question 2Interpreting and Evaluating Experimental Results with Graphing

/ 9

Question 3Scientific Investigation

/ 4

Question 4Conceptual Analysis

/ 4

Question 5Analyze Model or Visual Representation

/ 4

Question 6Analyze Data

/ 4

How is the composite worked out?

Your share of each section is multiplied by that section's official weight and the results are added up, giving a score out of 100. A free-response question takes its section's share in proportion to its points.

AP Biology, May 2027 format
Section	Questions	Time	Weight
Section IMultiple Choice	60	90 min	50%
Section IIFree Response · 34 pts	6	90 min	50%

Estimated cut-offs

College Board does not publish cut scores for current exams. The values below are our estimates, derived from scoring worksheets College Board has released, and carry ±3 composite points of uncertainty.

The lowest composite (0–100) each AP score needs, estimated
AP 5	75 and above
AP 4	60 – 74.9
AP 3	44 – 59.9
AP 2	26 – 43.9
AP 1	below 26

Source worksheets: 2013 AP Biology Practice Exam · 2020 AP Biology Practice Exam 1

Where next?

A practice test sat under real timing turns the numbers you enter here from guesses into measurements.

Frequently asked questions

How is the AP Biology composite score calculated?▾

Each section counts at its official weight: Section I (60 multiple-choice questions) 50% and Section II (6 free-response questions, 9, 9, 4, 4, 4, 4 points) 50%. Your share of each section is multiplied by its weight and the results are added up, giving a composite out of 100.

What composite score do you need for a 5 on AP Biology?▾

College Board does not publish cut scores for current exams. Our estimate is about 75 out of 100 for a 5, 60 for a 4 and 44 for a 3. These cut-offs carry ±3 points of uncertainty and can move from year to year.

Do wrong answers lose points?▾

No. On AP multiple-choice sections a wrong or blank answer costs nothing and every correct answer is worth one point, so it always pays to answer every question.

How do I know my free-response points?▾

Score your answer against the scoring guidelines College Board publishes for that question. In our AP practice tests, your free-response answers get an AI estimate against the official scoring rows, with feedback on each row.