AP exams, 4 units
AP Computer Science A exam guide
Java programming across the four units of the revised AP Computer Science A framework, with published exam weightings.
Follows the fall 2025 course and exam description, from 15 May 2026
Overview
What AP Computer Science A covers.
AP Computer Science A is a Java programming course equivalent to a first-semester college computer science course. It covers object-oriented programming, control flow, class design, and data structures, and it assesses both reading code and writing it, with four free-response questions that require producing working Java by hand.
The course framework was revised effective fall 2025. The previous ten units were consolidated into four, the inheritance unit was removed to bring the course closer to typical introductory college courses, and topics on text files and data sets were added. The exam is now fully digital, with free-response answers typed into a code editor inside College Board's Bluebook app rather than handwritten.
Arcade Academy is an independent study workspace. Because the framework was revised recently, treat the official Course and Exam Description as authoritative for unit organization and published weightings, and use the unit pages below to organize coding practice.
At a glance
- Total time
- 3 hours
- Section I
- 42 multiple-choice questions in 1 hour 30 minutes, 55% of the exam score
- Section II
- 4 free-response questions in 1 hour 30 minutes, 45% of the exam score
- Delivery
- Fully digital: both sections are completed in College Board's Bluebook app, with free-response answers typed into a built-in code editor
- Reference material
- The Java Quick Reference is available during the exam
- Framework update
- The course framework was revised effective fall 2025, consolidating the previous ten units into four and removing the inheritance unit
- Score scale
- 1 to 5
- Governing body
- College Board
- Who takes it
- High school students who want college credit or placement in a first programming course, often after AP Computer Science Principles or another introductory course.
Scoring
The multiple-choice section contributes 55% and the free-response section 45% of a composite score, which College Board converts to the reported 1 to 5 scale using cut points set for that year's exam. Free-response answers are scored on rubrics that award partial credit for correct components, so a partially working method still earns points. Colleges set their own credit and placement policies.
Exam structure
Units
AP Computer Science A covers 4 units. Open one for its topics, published weighting, and section-specific study tips.
Unit 1: Using Objects and Methods
15–25%Unit 1 establishes Java fundamentals and the habit of using objects before building them. Primitive types, expressions, and…
6 topics
Unit 2: Selection and Iteration
25–35%Unit 2 covers control flow, the largest single source of multiple-choice questions after data collections. Boolean expressions…
6 topics
Unit 3: Class Creation
10–18%Unit 3 moves from using classes to writing them. Instance variables, constructors, accessor and mutator methods, static members…
6 topics
Unit 4: Data Collections
30–40%Unit 4 carries the largest published weighting in the course. It covers arrays, two-dimensional arrays, and ArrayList, along with…
6 topics
Study strategies
How to work through this exam.
These strategies follow from the exam's own structure. Adapt them to the time you actually have each week.
- Write code by hand or in a plain editor without autocomplete, since the exam's code editor will not fix syntax for you.
- Weight practice by the published percentages, giving data collections and selection and iteration the largest shares.
- Trace code methodically with a variable table, because a large fraction of the multiple-choice section is reading code rather than writing it.
- Work full free-response questions under time and then score them against released rubrics, since partial credit follows specific components.
- Practice writing complete classes from written specifications, which is the free-response format students most often underprepare.
- Confirm the current unit organization and exam details on the official pages, since the framework was revised effective fall 2025.
Common questions
AP Computer Science A questions students ask.
How is the AP Computer Science A Exam structured?
The exam runs 3 hours. Section I is 42 multiple-choice questions in 1 hour 30 minutes for 55% of the score, and Section II is 4 free-response questions in 1 hour 30 minutes for the remaining 45%. The Java Quick Reference is available during the exam.
What changed in the revised AP Computer Science A framework?
Effective fall 2025, the previous ten units were consolidated into four, the inheritance unit was removed to align the course more closely with typical introductory college courses, and topics on text files and data sets were added. The official Course and Exam Description is the authoritative description of the change.
Which units do students find hardest?
College Board does not rank difficulty. Students commonly report that two-dimensional array traversals and ArrayList modification during traversal require the most practice, and that writing a full class from a specification is the free-response format that needs the most rehearsal. Practice results are the better guide.
How is the exam scored?
The multiple-choice section contributes 55% and the free-response section 45% of a composite score converted to the reported 1 to 5 scale using cut points set each year. Free-response rubrics award partial credit for correct components, so incomplete but correct work still earns points. Colleges decide credit and placement individually.
How is the exam delivered, and can I use an IDE?
AP Computer Science A is fully digital and taken in College Board's Bluebook app, with free-response answers typed into a built-in code editor. It is a code editor rather than a full development environment, so it does not compile or run your code. Confirm current details on the official exam page.
Is Arcade Academy affiliated with College Board?
No. AP® is a registered trademark of College Board, which was not involved in the production of, and does not endorse, this site. Arcade Academy is an independent educational resource.
Before you build the schedule
Exam structures change. Confirm the current format, eligibility, and policies with College Board before you commit to a study plan.
Official exam information opens in a new tabGuide structure last checked against official sources on August 30, 2026.
Markdown version of this guide for citation, offline reading, and language models.
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