"We purchased this book in July. My son had already taken the test throughout his junior year and we used a personal tutor $$$. We saw minor improvement in his score , not much. I gave him this book in August as one last opportunity to improve his score on the Sept test in his senior year.We kind of accepted his previous scores but gave it a shot. He jumped 8 points! He used the strategies in this book and did several practice tests as well too. He was much more comfortable and didn't feel pressure when he took the test. He learned new strategies he didn't know. This book gives very specific details on how to understand the questions and strategies in a very simple way. He got a 30 and it's a game changer for him and his selection in schools."