The 2026-2027 LSAT Bible Duology
By: David M. Killoran & Jon M. Denning
The 2026-2027 LSAT Bible Duology
This two-book set will equip you with a robust foundation of conceptual mastery and skills for tackling every LSAT question type, preparing you for success on test day. Trusted for over 25 years by countless test takers who have realized their law school dreams.
About the Authors
David Killoran
Dave Killoran, a graduate of Duke University, is an expert in test preparation with over 25 years of teaching experience and a 99th percentile score on the official LSAT. In addition to having written PowerScore's renowned LSAT Bible Series, and many other popular publications, Dave has overseen the preparation of thousands of students, founded two national LSAT preparation companies, and currently co-hosts the popular PowerScore LSAT PodCast. Follow him on X @DaveKilloran for real-time advice and news pertaining to the law school admissions process.
Ratings & Reviews
"This trilogy is a great start to LSAT study prep, especially if you're self studier like me. I started off unable to complete more than half of the logic game section on practice tests. Now, after no prep other than reading these books, I am completing at least three out of four games per test with 100% accuracy with at least enough time left over to get a good start on the last game in each Analytical Reasoning section. I started out stronger in LR and RC sections, but found the Powerscore books in these categories very helpful as well (average improvement from around - 6 total in LR to maybe - 2 or - 3, and from about - 4 in RC to - 1 or - 0 on each practice test I've taken).... I can't recommend this series enough."
"If you are studying for the LSAT, you NEED these books! This trilogy literally has all the information you need to conquer the LSAT. Each book does an amazing job of teaching you how to conquer each section. The PowerScore method for attacking the logic game sections is by far the best method out there. Anyone who has learned a different method, I recommend that they look into the PowerScore method. Each book has drills, examples, and practice problems. They are set up so at the end of each chapter you apply what you learned to practice problems. They also have drills throughout chapters. It is interactive and easy to read and understand."
"I started off using a single book from another company that covered the whole LSAT. After a month of studying my score barely improved. I switched to the PowerScore books and improved my score 10 points in 7 weeks which earned me scholarships at numerous target schools. In my opinion PowerScore is the only option for LSAT prep."
Recommended Books
The PowerScore/Spivey Consulting Law School Admissions Bible
The leading test prep company and the leading law school admissions consulting firm have come together to put out the most comprehensive book available on the law school admissions process.
The 2026-2027 LSAT Logical Reasoning Bible
A systematic approach to LSAT Logical Reasoning that demonstrates how to steadily increase your score with an expansive set of skills and problem solving techniques.
The 2026-2027 LSAT Reading Comprehension Bible
The most comprehensive LSAT prep book available for the LSAT Reading Comprehension section, providing crucial guidance to increase your proficiency and speed with all passage types.
The PowerScore Testing + Analytics Package
Make the most of your practice time.
Simulate the test day experience and track your progress with powerful analytics. Practicing for the LSAT requires so much more than just taking raw practice tests. With our Testing and Analytics database and online testing interface, you'll have access to everything you need to make sure your practice time is spent as efficiently as possible, including:
- Every available official, LSAT-licensed practice test delivered via our online testing platform
- Custom drills isolated by question and concept type
- Individual full test sections from past LSATs
- Regularly updated practice sets and preview videos curated by our experts to reflect the most recent testing trends
- Performance tracking system to help determine strengths and weaknesses on individual tests/drills, as well as across your entire LSAT prep journey
- $49 for 1st month subscription, $35 for all subsequent months
LSAT Prep Courses
Comprehensive, expert guidance all the way through test day. PowerScore course students have seen score increases of 30 points or more! Available online in live and on demand formats.
Private Tutoring
Custom LSAT guidance to give you the score boost you need. Work directly with an expert who will curate your prep experience based solely on your needs and goals. Available in person or online.
Jon Denning
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. Jon also co-hosts the popular PowerScore LSAT PodCast. Follow him on X @JonMDenning for real-time advice and news pertaining to the law school admissions process.