We're so certain that SAT Prep Plus offers all the guidance you need to excel on the SAT that we guarantee it: After studying with our online resources and book, you'll score higher on the SAT—or you'll get your money back. The Best Practice Five full-length Kaplan practice tests: 2 in the book and 3 online More than 1,500 practice questions with detailed explanations Pre-quizzes to help you figure out what you already know and what you can skip Mixed...