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Used Prep Books?
We do NOT recommend buying a used prep book. Most of the value in a prep book is the paper-and-pencil practice problems. If someone has already done them, you won’t get that value.
SAT (and PSAT)
Questions about SAT or ACT prep? Click here to learn more.
We recommend you start with the official prep guide.
Then, use these to get extra practice after you’ve completed all of the official guide’s practice tests:
ACT
Questions about SAT or ACT prep? Click here to learn more.
We recommend you start with the official prep guide.
Then, use these to get extra practice after you’ve completed all of the official guide’s practice tests:
HSPT (for Catholic High School Entrance)
Barron’s Strategies and Practice for the HSPT
ISEE
We strongly recommend starting with the official prep materials, and only expanding beyond them after you use them up.
Official ISEE prep materials and information (all levels)
Lower Level (applying to middle school as a 5th grader)
The Best Unofficial Practice Tests for the Lower Level ISEE
Lower Level ISEE: 1000+ Practice Questions
Middle Level (applying to middle school as a 6th grader or older)
The Best Unofficial Practice Tests for the Middle Level ISEE
Middle Level ISEE: 1000+ Practice Questions
Upper Level (applying to high school as an 8th grader or older)
The Best Unofficial Practice Tests for the Upper Level ISEE
Upper Level ISEE: 1500+ Practice Questions
SSAT
We strongly recommend starting with the official prep book, and only expanding beyond that after you use up the material in the official book.
Official SSAT prep books (all levels) *
*Note: You do NOT need the online prep they offer. The paper book is preferred.
Elementary Level
SSAT Elementary Level Prep Book: Practice Tests and SSAT Study Guide for Grades 3 and 4
Elementary SSAT: 1000+ Practice Questions
Middle Level (applying to middle school as a 5th grader or older)
SSAT Middle Level Prep Book 2026-2027: 3 Practice Tests and SSAT Study Guide
Middle Level SSAT: 1000+ Practice Questions
Upper Level (applying to high school as an 8th grader or older)
Upper Level SSAT: 1500+ Practice Questions
GRE
The Official Guide to the GRE Test
Princeton Review GRE Premium Prep
AP Exams
AP World History: Modern
AP US History
AP European History
AP Human Geography
AP US Government and Politics
AP Calculus
Princeton Review AP Calculus AB Prep
Princeton Review AP Calculus BC Prep
AP Calculus Premium: With 12 Practice Tests (Barron’s Test Prep)
AP Statistics
AP Chemistry
AP Biology
AP English Language & Composition
AP English Literature & Composition
AP Spanish Language & Culture