Book excerpt: 2019 Update - We have made revisions to correct for minor errata. For a complete list of updates made, please visit us at www.thetutorverse.com. --- The Upper Level ISEE can be a very challenging test. Extra practice can make all the difference between a good score and a great score. That's why this book has more questions than even 10 full-length exams - well over 1,500 practice questions dedicated only to the Upper Level ISEE. You won't find any material in this book related to another test - there's no filler here! In this book you will find: * Two full-length tests; a diagnostic test to help you pinpoint the areas in most need of improvement, and a practice test to help familiarize students with the real thing. * Critical skills and concepts broken out by topic, so students can zero-in on key areas. * Questions that progress in difficulty, to help students expand their knowledge base and prepare for tough questions. * 100 pages of detailed answer explanations available online at www.thetutorverse.com. This book can be used for independent practice or for study with a professional educator. For best results, we recommend using this book with a tutor or teacher who can help students learn more about new or particularly challenging topics.