Key takeaways
The AP Computer Science Principles (AP CSP) exam evaluates students on computational thinking and problem-solving rather than just coding skills. Understanding the exam structure and preparation strategies is crucial for success, as the exam consists of a Create Performance Task and multiple-choice questions that assess a range of computing concepts.
- The AP CSP exam consists of 30% Create Performance Task (CPT) and 70% multiple-choice questions (source: Reddit).
- Focus on understanding concepts like algorithms and data analysis rather than memorizing a specific programming language.
- Students should expect approximately 50 single-select and 5-10 multi-select questions in the multiple-choice section (source: article).
- Utilize AP Classroom resources and practice tests to familiarize yourself with the exam format and question types.
Contents
AP Computer Science Principles (AP CSP) is one of the fastest-growing AP courses—and for good reason. Let’s break down what’s actually on the exam and how to prepare for success.
What Is the AP Computer Science Principles Exam?
“The Create Task makes up 30% of your score, and the MCQ makes up 70% of your score. You add your Create Task score + MCQ Score to get a final score out of 100 which is your final score”
The AP CSP exam tests computational thinking, data analysis, and digital problem-solving—not just syntax or programming skills. You don’t need to be a master coder to ace it, but you do need to understand how computing works and how to communicate your ideas clearly. The exam has two parts:
- Create Performance Task (CPT): A coding project + written reflection
- End-of-Course Exam: Multiple choice and performance-based questions
Your final AP score is based on 30% CPT and 70% the exam.
Key Topics Covered in the Exam
The exam is built around five main course units, and each unit connects to real-world problem-solving using computing. Here’s a breakdown of the key topics:
| Unit | What It Covers? |
| Creative Development | How programs are developed, tested, and documented; collaboration in coding |
| Data | How data is collected, analyzed, visualized, and used to solve problems |
| Algorithms and Programming | Variables, conditionals, loops, functions, and debugging |
| Computer Systems and Networks | How the internet works, cybersecurity, and network protocols |
| Impact of Computing | Ethics, digital privacy, and the effects of technology on society |
Each unit includes both conceptual questions and code-based reasoning. While students use pseudocode during the exam, they don’t need to master a specific programming language.
How to Prepare for the AP CSP Exam?
Preparation should combine concept review, coding practice, and exam strategy. Here’s how students at Legacy Online School prepare:
- Use AP Classroom for unit quizzes and progress checks
- Practice multiple choice with real and simulated questions
- Review student samples and scoring rubrics for the Create Task
- Focus on vocabulary (abstraction, algorithm, iteration, etc.)
- Take at least one full-length timed practice test
You don’t need to memorize JavaScript—but you should be able to read pseudocode and explain how a program works step by step.
What Types of Questions are on the AP CSP Exam?
The exam includes:
- Single-select multiple choice (SSMC): One correct answer
- Multiple-select multiple choice (MSMC): Two correct answers
- Stimulus-based questions: Interpret code snippets, data visualizations, or real-world scenarios
- Logic puzzles: Spot errors, predict outputs, optimize behavior
No free-response coding on the exam—but you’ll explain code, interpret tables, and solve logic-based problems.
Multiple Choice Questions Overview
Here’s what to expect in the multiple-choice section:
| Question Type | Approx. # Questions |
| Single-select (SSMC) | ~50 |
| Multi-select (MSMC) | ~5-10 |
The questions often test reasoning over memorization. You might be asked to:
- Identify errors in a block of pseudocode
- Evaluate the effect of a loop
- Analyze a data trend
- Apply internet protocols to a security scenario
Understanding Free-Response Questions
The only “free-response” element is the Create Performance Task:
- Students develop a program using a language of their choice (Snap!, Python, JavaScript, etc.)
- Submit video + code + written reflection (about 400–600 words)
- Graded on functionality, abstraction, and impact
Legacy Online School runs CPT review workshops to help students avoid common mistakes—especially in the written response section.
Where Can I Find AP CSP Practice Tests?
“#1 is to ask your teacher to release all of the full-length practice exams in AP Classroom. They are awesome as they are actual old MC exams, and they have annotations – explanations of the wrong answers. There are four exams so that’s almost 300 MC questions”
Reliable sources for practice questions:
- College Board AP Classroom
- Barron’s and 5 Steps to a 5
- Legacy Online School
- Past FRQ samples from previous Create Tasks (scored examples online)
Avoid outdated or programming-language-specific practice that doesn’t align with the current exam structure.
What Are the Best Strategies for Answering AP CSP Exam Questions?
Here are the best strategies that actually work:
- Read the full question before looking at the answer choices. Many CSP questions contain subtle clues near the end—especially ones with pseudocode. Skimming too fast can lead to quick but wrong answers
- Underline key words like “NOT,” “best,” or “most efficient.” These change the entire meaning of the question. A lot of students lose points because they miss just one word
- Even if you’re unsure, you can usually rule out at least one or two answer choices. CSP questions often include distractors that are almost right—but not quite
- Go line by line and write down what the program is doing. Don’t try to guess based on the structure alone
- Know the difference between things like parameters and arguments, or encryption and encoding. Definitions matter more than code in many cases
- You get 2 hours for 70 multiple-choice questions. That’s about 1 minute and 43 seconds per question. Don’t spend more than 2 minutes on a single one. Mark it and move on
- For the Create Performance Task, focus on clarity over complexity. You don’t need a flashy app—just a clear algorithm with selection and iteration, and good comments. Review the College Board scoring guidelines to understand what reviewers are looking for
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Top Tips from Our Expert
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Alyssa Mendoza, AP Coordinator and College Prep Specialist
Sources: College Board, Reddit
