The Princeton Review they say is staffed by hiree's who are not always up to snuff. Much of it is done by rote and they don't use the most up-to-date examples of the current test. What I have heard is to canvass your area for a very highly recommended small local test prep course. They say that those are usually staffed by a small group of dedicated and very competent instructors who live and die by their reputation and so must keep a high standard of results. I did very poorly in HS; too much party. Luckily I snuck into college and straightened out my act after a few years. I took ten years to get my Bachelors because it was really of no help to me to have a degree; I would have lost money by advancing to the management ranks. Plus I don't do well with authority; I like my space so to speak.