I had Justin Loh for my instructor. A very knowledgeable and humorous instructor, he was able to make studying for the SAT very fun while still effectively showing me how to handle seemingly difficult questions very manageable. Last summer, I took the self guided SAT course from Prep Expert, but I wish that I took an instructed class instead. For as good as the self guided class is, having an instructor, a real person on the other end of the screen that can respond to questions, is indispensable. Although I have only done practice tests, I’ve seen real improvement.