AP Biology Score Calculator

The AP Biology exam runs for three hours and is divided into two sections. Section I contains 60 multiple choice questions to be completed in 90 minutes. These questions test conceptual understanding, data analysis, and scientific reasoning across all eight units of the AP Biology curriculum. No calculator is permitted during Section I. Section II is the free response section and runs for 90 minutes, during which a basic four-function calculator is permitted. It contains 6 questions: 2 long-answer questions worth 8 points each and 4 short-answer questions worth 4 points each, for a maximum free response raw score of 32 points. Students who take the digital version of the exam have access to a built-in four-function calculator provided within the testing platform.

Both sections contribute equally to the composite score — 50 percent from multiple choice and 50 percent from free response. The multiple choice raw score out of 60 is scaled to a 54-point contribution, and the free response raw score out of 32 is also scaled to a 54-point contribution, giving a composite maximum of 108. College Board readers score each free response question against a detailed rubric that rewards scientific reasoning and evidence-based argumentation as much as factual recall. Following scoring, College Board uses statistical equating to set the exact composite cutoffs for each AP grade level, which may vary slightly from year to year depending on the difficulty of that administration. Convert section raw scores with our raw to scale converter.

AP Biology has a pass rate of approximately 60 percent — slightly higher than AP Chemistry but still demanding relative to the full AP catalogue. Around 14 percent of students earn a 5, 20 percent earn a 4, and 26 percent earn a 3. A score of 5 represents the equivalent of earning an A in a college-level introductory biology course. For pre-med students and biology majors, a 4 or 5 is particularly valuable because many competitive programs require those scores before awarding credit for required foundational courses. Students who earn a 2 on the AP Biology exam may benefit from additional preparation before enrolling in college-level biology, as the college course will assume similar content knowledge. Track how earned credit affects your transcript with the GPA calculator or model admissions fit with the college admission chance calculator.