AP Computer Science A score calculator.

Section I gives you 90 minutes for 42 multiple-choice questions and counts for 55% of your score. Section II gives you another 90 minutes for four free-response questions, where you write Java methods and classes, and counts for 45%. Those four questions aren’t worth the same. The first two, Methods and Control Structures and Class Design, carry 7 points each; 2D Array carries 6 and Data Analysis with ArrayList 5, for 25 in all.

So each multiple-choice answer you get right adds about 1.31 points to this calculator’s 100-point composite, and each free-response point adds 1.8. One point of free response is worth about 1.4 right answers in multiple choice.

A worked example

Say you get 28 of the 42 multiple-choice questions right and earn 6, 5, 4 and 4 on the free response, 19 of the 25 points. Multiple choice gives you 36.7 composite points (28 times 1.31) and free response gives 34.2 (19 times 1.8), so your composite is 70.9. That clears our line for a 5, which sits at 68.8.

Sources: College Board’s AP Computer Science A exam page on AP Students, the exam page on AP Central and the AP Computer Science A Course and Exam Description (p. 145).

In May 2025 the multiple-choice section had 40 questions and the free-response section four, each section worth 50%, and every free-response question was scored out of 9. Starting with the May 2026 exam, multiple choice grew to 42 questions and 55% of the score while free response dropped to 45%, and the four questions became worth 7, 7, 5 and 6 points. The third question changed focus too, from arrays and ArrayLists together to data analysis with an ArrayList. The exam was already fully digital in Bluebook before the change, so that part stayed the same.

College Board flags the gap itself. Its page of past free-response questions warns that the sets from before the revision don’t fully match today’s exam, and keeps them up because teachers still find them useful.

The 4 units and their share of the multiple choice

The revised course has four units, and College Board gives each one a weighting in the multiple-choice section. Selection and Iteration covers Boolean expressions, if statements and loops. Data Collections, home to arrays, ArrayLists, 2D arrays, recursion and the searching and sorting algorithms, is the largest at 30% to 40%.

What each unit covers, topic by topic, is in our AP CSA units guide.

Sources: College Board’s AP Students exam page as archived on February 24, 2025, the 2025 and 2026 scoring guidelines, the 2025 chief reader report, AP Central’s past exam questions and the Course and Exam Description (p. 146).

Nine still score the free response out of 36 points, the pre-2026 total, and eight still expect 40 multiple-choice questions. That matters more than it looks. If you earn 18 of today’s 25 free-response points, you have 72% of the section. A calculator built for 36 points reads the same 18 as half the section.

Put 30 right multiple-choice answers with those 18 points. This calculator gives you 71.7, a 5 on our lines. Scale the same 18 points against 36 instead and the free response is worth 22.5 of its 45 points, not 32.4, so the composite falls to 61.8, a 4.

Scoring an older exam with 9-point questions

Exams from 2025 and earlier had 40 multiple-choice questions and four free-response questions worth 9 points each. To use one here, scale each piece to today’s maximum. Multiply a multiple-choice score by 42/40, so 32 right becomes 33.6 and you enter 34, and scale each free-response score to its question’s new maximum, so 6 of 9 on the first question becomes 4.7 of 7 and you enter 5. The tasks changed with the revision, so treat the result as a rough guide.

Each AP score covers a score range on the composite, and the table gives the threshold for each one. Counted in students instead of points, a quarter of 2026 test takers earned a 5. The line for a 4 sits lower than many calculators put it, because College Board’s 2026 results placed 51% of students at a 4 or higher.

Why there’s no official AP CSA cutoff

College Board sets the lines for a 2, 3, 4 and 5 through what it calls Evidence Based Standard Setting, which draws on input from college faculty and detailed data on how students performed, so that a score reflects the same level of work from year to year. Each May brings a new exam form, so the raw points behind a 4 can move while the standard stays put. College Board doesn’t publish those raw-score lines, which is why all the cutoffs you find online, ours included, are estimates. People often call this set of lines the AP CSA curve, but nobody is ranked against the other students in the room.

At 12 free-response points, about what College Board’s averages suggest, a 5 takes 37 right multiple-choice answers, a 4 takes 21 and a 3 takes 13. Neither section reaches a 5 on its own. A perfect multiple-choice section with no free-response points is a composite of 55, which is a 4, while every free-response point with no multiple choice adds up to 45, a 3.

Question 1, Methods and Control Structures, has two parts: 4 points for a method or constructor built on loops or conditionals that calls the class’s other methods, and 3 for one that relies on String methods. Question 2, Class Design, asks for a whole class, with its class header, instance variables, constructor and a method, for 7 points. Question 3 (5 points) asks you to traverse and change the data stored in an ArrayList, and Question 4 (6 points) does the same with a 2D array.

How each of those points is earned, question by question, is in our AP comp sci A FRQ guide.

What the 2026 free-response questions asked

The 2026 set, the first written to the new point values, opened with an Account class for a website. You wrote a constructor that keeps adding a number to a requested username until the name is free, then a method that shortens the username with String methods. Question 2 had you write a Bottle class that starts full and tracks how much liquid is left against its capacity in milliliters. Question 3 worked with a CourseRecord class holding a student’s course information, and Question 4 with a Space class for the squares of a game board. College Board hasn’t posted statistics for these questions yet.

How students scored on the 9-point questions, 2023 to 2025

Every year College Board posts the average score for each free-response question. Under the old format, with four questions worth 9 points each, the averages ran from 3.20 to 5.70, and the four together came to 17.31, 18.06 and 17.83 of 36 in 2023, 2024 and 2025: about half the points every year.

Question 4, the 2D array task, had the lowest average in all three years.

Where students lost points in 2025

College Board’s 2025 chief reader report gives the average score on all 36 rubric points from that year’s four 9-point questions, each point worth 1. Most of them, 26 of 36, were earned by 40% to 70% of students. A few sat far lower, and three of the seven lowest were the last point of their question, each one labeled as an algorithm point.

The single hardest point, handling a special case in the 2D array question, went to 12% of students.

Sources: College Board’s scoring statistics for 2025, 2024 and 2023, its 2025 chief reader report, the 2026 free-response questions, the 2026 scoring guidelines and the Course and Exam Description (p. 147).

The pass rate, the share with a passing score of 3 or higher, was 66%. The 23% who earned a 1 was the largest share of 1s among the 40 exams in College Board’s 2026 table, while only four exams had a larger share of 5s. College Board’s 2026 figures are percentages only, with no test-taker count yet; they imply a mean near 3.19. In 2025, 93,217 students took the exam and their mean score was 3.18.

Sources: the AP Computer Science A score distributions and the all-exam 2026 distribution table on College Board’s AP Students site. The global distribution report for May 2025, posted on AP Central, counts 93,906 students instead of 93,217; this page uses the AP Students figures.

Credit and placement are each college’s call, and policies vary widely. To see what a particular college gives for a CSA score, look it up in College Board’s AP Credit Policy Search.

AP CSA vs AP CSP

The two AP computer science courses test different things. AP CSA is Java programming from start to finish, and its four free-response questions ask you to write working Java code. In AP Computer Science Principles (AP CSP) your teacher picks the programming language and the course covers wider ground, from how the internet works to data and the effects of computing. Its exam pairs 70 multiple-choice questions (70%) with the Create performance task, a program you write in class time during the year (30%).

Sources: College Board’s AP score scale table, its comparison of the two courses and the AP CSP exam page.

The exam date is Wednesday, May 12, 2027, in Session 2. That session starts at 12 p.m. local time, or 11 a.m. in Alaska. The exam is fully digital: you answer both sections in Bluebook, College Board’s testing app, and your answers are submitted automatically at the end.

Inside the app you get the Java Quick Reference, College Board’s list of the Java library methods the exam can use, and your school may hand out a printed copy as well. Calculators are not allowed on Computer Science A, apart from a four-function model approved as an accommodation. Scores come out in July, in your College Board account.

Sources: the AP Computer Science A exam page, the AP Central page of exam start times, the calculator policy, the Java Quick Reference and the instructions for viewing scores.

The arithmetic behind the composite is exact. Multiple choice can add up to 55 points and free response up to 45, matching College Board’s split. What this AP CSA calculator can’t check is how you scored yourself. In free response a rubric point is earned only when its condition is fully met, so give yourself the point only if your code clearly does what that line asks; rounding up on two or three points is the usual reason a predicted AP score comes out high.

We set the lines from College Board’s own CSA figures. From 2023 to 2025 students averaged about half the free-response points (49.5% in 2025), with wide spreads on every question, and we placed the four lines where they reproduce College Board’s 2026 results: 25% 5s, 26% 4s, 15% 3s, 11% 2s and 23% 1s. Two gaps are worth knowing. Those averages come from the old four 9-point questions, because College Board hasn’t yet published free-response statistics for the revised exam. It also publishes no multiple-choice average, so we assume multiple choice matches the free-response share. We’ll refit the lines once the 2026 statistics appear.

Treat anything within about 3 points of a line as a toss-up between the two scores.

Why two AP CSA calculators can give different scores

Mostly two settings. Nine of the 17 tools we checked still score the free response out of 36, which undervalues every point on today’s exam. Their lines differ too: most of the ones that show their lines put a 5 between 77.5% and 78% of the composite, a 4 between 57.5% and 59% and a 3 between 46% and 47%. Our line for a 5, 68.8, sits well below theirs because College Board’s 2026 results put 25% of students at a 5; on our model, lines that high would hand a 5 to about one student in six.

Sources: College Board’s pages on how AP scores work and how scores are set, the Course and Exam Description, the 2023 to 2025 CSA scoring statistics and the 2026 CSA distribution. By Mahmudul Hasan, October 2026.