- This book is a compact version of Barron’s full-length LSAT test preparation manual. Pass Key to the LSAT presents three full-length model tests with all questions answered and explained. They closely reflect the currently given Law School Admission Test in length, question types, and degree of difficulty. The author also provides a valuable analysis of the test’s four question types: reading comprehension, analytical reasoning, logical reasoning, and the writing sample. Equally helpful is extensive test-taking advice that suggests three-, four-, and five-step approaches to the test’s various question types.