If you’re preparing for the AP Biology exam, your review book can make or break your score. The right resource doesn’t just teach the content — it trains you to think like the AP graders, break down complex questions, and manage your time under pressure. At RevisionDojo, we’ve analyzed past AP Biology FRQs, multiple-choice trends, and student feedback to rank the best review books for 2025.
Whether you’re aiming for a 3 to pass or a 5 for college credit, this guide will help you choose the perfect resource.
1. Princeton Review – AP Biology Premium Prep, 2025 Edition
Why It’s #1:
Princeton Review is the gold standard for comprehensive AP Bio prep. It’s beginner-friendly yet deep enough for high scorers. The practice tests closely mirror the College Board’s style, especially for FRQs.
Pros:
- 5 full-length practice tests (3 in book, 2 online)
- Clear explanations for MCQs and FRQs
- Great visuals and charts for complex topics
- Includes pacing and test-day strategies
Cons:
- Slightly less detailed than Campbell Biology
- Some questions are a bit easier than the real exam
Best For: Students who want structure, strategy, and strong test-day readiness.
2. Barron’s AP Biology, 2025 Edition
Why It’s #2:
Barron’s is known for its rigor — its questions are harder than the actual exam, making it perfect for over-preparing.
Pros:
- Extremely detailed explanations
- Covers every unit extensively
- Challenging FRQs with rubrics
- Great for mastering tricky concepts like gene regulation
Cons:
- Can be overwhelming for beginners
- Less emphasis on test-taking strategy
Best For: High-achievers aiming for a 5 who don’t mind extra difficulty.
3. Campbell Biology (AP Edition)
Why It’s #3:
This is the AP Biology textbook. It’s not a review book but offers unparalleled depth and accuracy.
Pros:
- Most comprehensive AP Bio resource
- Perfect for in-depth concept mastery
- High-quality diagrams and figures
- Matches College Board curriculum exactly
Cons:
- Heavy, expensive, and time-consuming to read
- Lacks test strategy guidance
Best For: Students who want a deep, college-level foundation.
4. 5 Steps to a 5: AP Biology, 2025 Edition
Why It’s #4:
A streamlined, no-nonsense prep book that organizes study in manageable chunks.
Pros:
- Clear 5-step study plan
- Good balance of content review and practice
- Works well for last-minute studying
- Online flashcards included
Cons:
- Fewer practice tests than Princeton Review
- Explanations can be too brief for complex topics
Best For: Students who like structure and short, digestible lessons.
5. CliffsNotes AP Biology, 5th Edition
Why It’s #5:
A budget-friendly choice that still covers the essentials well.
Pros:
- Affordable
- Easy-to-follow summaries
- Covers labs and experimental design questions
- Compact size for on-the-go review
Cons:
- Less detailed than Barron’s or Princeton Review
- Fewer practice questions
Best For: Students on a budget or looking for a quick review.
6. Sterling Test Prep AP Biology Practice Questions
Why It’s #6:
This is a pure question bank — great for drilling weaknesses.
Pros:
- 1,500+ MCQs and FRQs
- Detailed explanations for every question
- Focuses on tricky AP-style traps
Cons:
- No full content review
- Requires pairing with another resource
Best For: Students who already know the material and want more practice.
How to Choose the Right AP Biology Review Book
- If you need test strategy: Go with Princeton Review or 5 Steps to a 5.
- If you want to overprepare: Barron’s is your pick.
- If you want full concept mastery: Campbell Biology.
- If you’re on a budget: CliffsNotes.
- If you just need practice: Sterling Test Prep.
Study Tips for Using AP Biology Review Books Effectively
- Pair content review with practice – Don’t just read; do questions daily.
- Simulate real test conditions – Use College Board’s free past FRQs and MCQs.
- Focus on weak areas – Identify and drill problem topics early.
- Use multiple sources – One book for strategy, one for deep content.
- Practice FRQ writing – Grade yourself with the official rubrics.
FAQs
Q: Which AP Biology book is best for beginners?
A: Princeton Review offers the best mix of content and strategy for first-time test-takers.
Q: Is Barron’s too hard?
A: Yes for beginners, but perfect for high scorers aiming for a 5.
Q: Can I just use Campbell Biology?
A: You can, but it’s more effective when paired with a review book for strategy and practice.
Q: How many books should I use?
A: One main review book plus a question bank or past FRQs is ideal.
Final Thoughts & Call to Action
Your AP Biology review book isn’t just a resource — it’s your exam partner. The key is matching the right book to your study style and starting early enough to cover all units and practice extensively.
At RevisionDojo, we specialize in helping students master AP Biology with structured study plans, practice test breakdowns, and insider tips from top scorers. If you’re serious about getting a 5, check out our AP Biology Study Hub for free FRQ guides, scoring rubrics, and custom practice sets.
