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AP®︎ CS Principles Study Guides

Prepare for your quiz, test, or the AP exam with comprehensive study guides that cover everything you need to know. Select a unit or topic to begin.

Unit 1: Creative Development

All Topics
Complete Unit Review

Topic 1.1
Collaboration

Topic 1.2
Program Function and Purpose

Topic 1.3
Program Design and Development

Topic 1.4
Identifying and Correcting Errors

Unit 2: Data

All Topics
Complete Unit Review

Topic 2.1
Binary Numbers

Topic 2.2
Data Compression

Topic 2.3
Extracting Information from Data

Topic 2.4
Using Programs with Data

Unit 3: Algorithms and Programming

All Topics
Complete Unit Review

Topic 3.1
Variables and Assignments

Topic 3.2
Data Abstraction

Topic 3.3
Mathematical Expressions

Topic 3.4
Strings

Topic 3.5
Boolean Expressions

Topic 3.6
Conditionals

Topic 3.7
Nested Conditionals

Topic 3.8
Iteration

Topic 3.9
Developing Algorithms

Topic 3.10
Lists

Topic 3.11
Binary Search

Topic 3.12
Calling Procedures

Topic 3.13
Developing Procedures

Topic 3.14
Libraries

Topic 3.15
Random Values

Topic 3.16
Simulations

Topic 3.17
Algorithmic Efficiency

Topic 3.18
Undecidable Problems

Unit 4: Computer Systems and Networks

All Topics
Complete Unit Review

Topic 4.1
The Internet

Topic 4.2
Fault Tolerance

Topic 4.3
Parallel and Distributed Computing

Unit 5: Impact of Computing

All Topics
Complete Unit Review

Topic 5.1
Beneficial and Harmful Effects

Topic 5.2
Digital Divide

Topic 5.3
Computing Bias

Topic 5.4
Crowdsourcing

Topic 5.5
Legal and Ethical Concerns

Topic 5.6
Safe Computing

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