I started working with Stable Genius Prep in January to prepare for the General GRE. We assessed right away that the Quantitative material was my weak spot, and where I'd need the most help.
I'm the type of person who really has to be able to understand something before I can master it, and I don't naturally think mathematically. In other words I can't just memorize formulae and when to apply them. Andrew was excellent with this. Even when I got answers right, he would make sure to go over with me what the principles were behind the problem. He has clearly had much experience tutoring pupils.
Perhaps what had the most impact on me, and on my desire to work hard, was the patience he exhibited; it may have not even registered with him, but I noticed it. In the beginning I worked at an excruciatingly slow pace through everything from Arithmetic to Statistics and Probability. It took two hours just to get through ten problems. By the end of our prep, I was able to work through the same number of questions in about 15-20 minutes, and at a high level of difficulty.
While my essay writing is normally solid, it was difficult to exhibit that within the 30 minute time limit. Andrew reviewed my practice essays with me and really helped me to develop strategies to write strong essays that follow the test instructions within the time allotted.
Ultimately my Math score went from the 48th percentile up to the 83rd percentile! I couldn't be happier with my experience, and with the results we were able to get. I say "we" because by the end I felt like we were a team, with Andrew as my coach. He is a master of the material, and he understands how to teach it effectively. I definitely recommend Stable Genius Prep to anyone looking not only to get over a certain threshold, but to really maximize their potential and do as well as they possibly can!