@MeiFrancis: Hey, I teach test prep myself!
If you teach the SAT, I’d say it’s not insane for you to score in the 90th percentile, but the GRE is definitely harder. Some big differences:
(1) The vocabulary on the GRE is extremely challenging, and half of the questions are vocab questions. It’s not esoteric vocab or jargon, but it is very high level. If you have a good vocabulary already, some cramming should put you over the edge, I’d think.
(2) The math is like a slightly roided-out version of the SAT. The math doesn’t get much harder–there’s not much past Algebra II on the GRE, just like the SAT. However, you don’t get to use a graphing calculator, only an on-screen basic one. Also, there are a few concepts that aren’t tested on the SAT that do appear on the GRE (factorials, standard deviation, combinations and permutations are the ones I can think of off the top of my head). Basically, the content isn’t all that different, but the problems are harder. Again, if you already teach SAT, you’re probably teaching hard math Qs already to your smarties, so there’s a good chance you’ll be fine. Brush up on your geometry facts, as there’s no fact sheet like there is on the SAT.
With my company, if you’re already a teacher, they will give you a bit of flexibility re: the 90th percentile.
Also, don’t they, like, train you to teach the test? Are you going to go through a training on the GRE before this class starts in 5 days? If they DON’T do a training, I’d be happy to suggest a better test prep company for you to work for, lol!
Feel free to ask further questions! I’ve been teaching test prep for 7 years, and I teach SAT, ACT, GRE, GMAT, MCAT Verbal, plus a few other less common tests as well.