The #1 selling LSAT prep books.

PowerScore is the leader in LSAT self-study for 25+ years. Our LSAT Bibles have helped hundreds of thousands of students succeed on the LSAT.

  • Most comprehensive prep books available
  • Industry-leading concepts and techniques
  • Online resource hub with practice drills and lessons
  • Written by LSAT experts Dave Killoran and Jon Denning
BUY NOW

934,489+

That's how many PowerScore LSAT prep books (and counting) students have purchased to prepare for the LSAT.

PowerScore students attend top law schools.

PowerScore students consistently achieve LSAT scores in the highest percentile, ultimately leading to acceptance into all of the top ranking law schools in the country.

Most Comprehensive Packages

MOST POPULAR!

The 2023 LSAT Bible Trilogy
$194.97 $144.99 (save 26%)

The most comprehensive books available for learning how to approach each section of the LSAT
Includes:
  • The LSAT Logic Games Bible
  • The LSAT Logical Reasoning Bible
  • The LSAT Reading Comprehension Bible
  • The LSAT Logic Games Bible Workbook
  • The LSAT Logical Reasoning Bible Workbook
  • The LSAT Reading Comprehension Bible Workbook
BUY NOW

The 2023 LSAT Bible Trilogy Practice Pack
$314.94 $249.99 (save 21%)

The perfection combination of learning and mastering the PowerScore approach to the LSAT
Includes:
  • The LSAT Logic Games Bible
  • The LSAT Logical Reasoning Bible
  • The LSAT Reading Comprehension Bible
  • The LSAT Logic Games Bible Workbook
  • The LSAT Logical Reasoning Bible Workbook
  • The LSAT Reading Comprehension Bible Workbook
BUY NOW

LSAT Bible Series

The 2023 LSAT Logic Games Bible
$64.99 $50.99 (save 22%)

View details
  • Recognize game types and proper ways to represent rules
  • Methods for making inferences efficiently and accurately
  • Techniques for solving and diagramming each game type
  • Detailed explanations for 28 official LSAT logic games
  • Discussion and close look at the LSAC digital interface
BUY NOW

The 2023 LSAT Logical Reasoning Bible
$64.99 $50.99 (save 22%)

View details
  • Understand and master every logical reasoning question type
  • Recognize common reasoning elements and determine validity
  • Draw accurate inferences and quickly eliminate answer choices with confidence
  • Solve even the most complicated logical reasoning problems with extensive drills
BUY NOW

The 2023 LSAT Reading Comprehension Bible
$64.99 $49.99 (save 23%)

View details
  • Official LSAT passages and questions with complete explanations
  • How to deconstruct passages, identify and attack questions, and avoid traps set by test makers
  • Strategies and drills to increase your section speed
  • Quick-reference answer key to all the problems
BUY NOW

The October 2025 LSAT Crystal Ball - On-Demand Webinar Recording

Video Topic Timestamps:

0:00: Introduction and Agenda
3:14: How Test Prediction Usually Works
12:57: Why/How Has Cheating Affected The October LSAT?
21:10: Our Original August and September 2025 Predictions and Accuracy
26:20: Best LSAT PrepTests to Take Prior To October​
30:00: Logical Reasoning Intro
33:32: Current Logical Reasoning Features​
41:22: What LR content will you see on the next LSAT: Content frequency
49:25: What LR content will you see on the next LSAT: Flaw in the Reasoning
53:50: What LR content will you see on the next LSAT: Strengthen
55:13: What LR content will you see on the next LSAT: Necessary Assumptions
58:45: What LR content will you see on the next LSAT: Must Be True
1:04:40: The LR Content You Should Review Before Test Day​
1:10:00: Free LR resources
1:11:45: Reading Comprehension Intro and Current Features
1:14:00: RC Question and Passage Types
1:16:12: RC Topic Predictions (August/September and October)
1:17:50: The RC Content You Should Review Before Test Day​
1:19:45: Free RC Resources
1:20:45: Helpful Info / Dave and Jon Contact Details
1:22:00: Outro


Learn more about our courses: powerscore.com/lsat/courses

About the Authors

Dave Killoran, a graduate of Duke University, is an expert in test preparation with over 20 years of teaching experience and a 99th percentile score on a LSAC-administered LSAT. In addition to having written PowerScore's legendary LSAT Bible Series, and many other popular publications, Dave has overseen the preparation of thousands of students and founded two national LSAT preparation companies.

Jon Denning, a graduate of the Georgia Institute of Technology, oversees product creation and instructor training for all of the exam services PowerScore offers. He is also a Senior Instructor with 99th percentile scores on the LSAT, GMAT, GRE, SAT, and ACT, and for the past 15 years has assisted thousands of students in the college, graduate, and law school admissions processes.