AP Biology Score Calculator

Each correct multiple-choice answer, out of 60, is worth one composite point. Your free-response points, out of 34 across the six questions, are scaled to 60 composite points. The two are added and rounded to give a composite out of 120, which the curve converts to a 1 to 5. Both sections count for 50% of the exam.

The composite is exact, built from College Board's published section weights and point values. The 1 to 5 conversion is a projection. College Board has never released a scoring worksheet for the current exam and sets its cutoffs only after each administration. The curve here comes from three AP-prep sites that agree exactly, but a composite near a cutoff could go either way.

On the curve used here you need 93 out of 120, which is 77.5%. About 18.9% of test takers earned a 5 in 2025. College Board resets its real cutoffs every year, so a composite within a few points of 93 in either direction is too close to call as a 4 or a 5.

No. Seventy percent of 120 is 84 points, which is a 4 on this curve. A 5 starts at 93, or 77.5%. A raw percentage on a practice test only tells you where you are if the sections are weighted the same way, so use your composite score instead of your percentage.

A composite of 74 out of 120 earns a 4 on the curve used here, about 62%. That is a lower bar than many students assume. In 2025, 24.1% of test takers scored a 4 and another 18.9% scored a 5, so 43% of test takers scored a 4 or 5 on the real exam.

A composite of 51 out of 120, which is 42.5%, reaches a 3 on this curve. A 3 is the lowest score College Board calls qualified and it was the most common result in 2025, at 27.4% of test takers. Whether it earns college credit depends on the school, and many want a 4.

There are 60 questions, and you get 90 minutes for them. They make up 50% of the exam score. Some are single questions and others come in sets of four or five that share one stimulus, such as a data table or a figure. Only correct answers count, so guessing costs nothing.

There are six, in 90 minutes: two long questions worth 9 points each and four short questions worth 4 points each, for 34 raw points. Together they are the other 50% of the exam score. The long questions interpret and evaluate experimental results, one of them with graphing.

Not for the current exam. College Board does not release the composite needed for each AP score in advance. It sets those cutoffs after the exam through a statistical process that adjusts for how hard that year's version was, so a given score means the same thing each year. Any conversion chart, including this one, is a projection.

College Board's 2025 distribution shows a mean of 3.24 across 287,232 test takers, and 70.4% scored a 3 or higher. The average moves a little each year with the size of the test-taking group and the difficulty of that year's exam.

In 2025, 18.9% of test takers scored a 5. The rest split as 24.1% with a 4, 27.4% with a 3, 21.0% with a 2 and 8.6% with a 1, according to College Board's published distribution. A 3 was the most common result, followed by a 4.

No. AP Chemistry has 60 multiple-choice questions like Biology but seven free-response questions worth 46 points, a different composite scale and a different curve. Use our AP Chemistry score calculator for that exam. This page is built only for AP Biology's 120-point composite.