Prep Expert really shines with teaching students how to game the test. I started off with a score in the 90+ percentile so I wasn't sure how much prep would help me. However, with prep expert, I was able to reach 1580 and 1600 consistently on multiple practice tests. Dr. Patel's founder course is especially helpful because he has a fun and engaging teaching style and he actively encourages students to try out problems that may seem difficult. So even if you are someone who is trying to take their score up from a 90 percentile to a 99 percentile, Prep expert can definitely help you out. The strategies you learn help you be so much more confident when answering questions and help prevent silly mistakes. With prep expert strategies, you can even end up having extra time on the test modules.