WORK SMARTER, NOT HARDER, with The Princeton Review! This revised 9th edition of our popular ACT question compendium contains 1,550 practice problems to help familiarize you with the exam! It includes both drills and full-length tests, along with detailed answers and explanations.Take Control of Your Prep Score conversion charts help to assess your current progress Diagnostic drills that allow you to customize a study plan  Essay checklist to help you write a high-scoring response for the newest essay promptsWork Smarter, Not Harder In-depth answer explanations that help you learn by exploring every answer choice  Powerful techniques from The Princeton Reviews repertoire that will help you work quickly and efficiently  Solid fundamentals that lay the groundwork for your test-taking experience Practice Your Way to Excellence 3 full-length practice ACTs to prepare you for the actual testing experience  900+ additional questions (grouped by subject and equivalent in length to 3 more ACTs) to help you pinpoint your strengths and work through your weaknesses  Targeted subject drills to bolster critical ACT English and Math skills