Kim, I currently tutor ACT preparation. (The ACT is similar to the SAT.) It's very difficult to raise your score......BUT.......if there is a reason you did poorly on a first attempt, such as poor time management, a gap in content (such as don't understand slopes in math), or perhaps you "freeze" on exams, then preparation helps. One young man I tutored last fall raised his score two points (which is significant). I expect him to raise it more this spring.

The strategy that helped most for him was to take lots of timed practice tests. For instance, the math portion is to be worked at a rate of one problem per minute, 60 questions in 60 minutes. We would take several 10-question, 10-minute tests, then go over the ones that were missed. Also, he had lots of gaps in his English punctuation content which was easy to remedy. There's not much you can do to improve reading comprehension.

Both of my sons got scholarships by studying for the ACT test. One even scored *extremely* high on the pharmacy entrance test, and he attibuted it to studying and reviewing for it.

As best I remember, the GRE is heavy on content, so it would be wise IMO to get a study guide and do some reviewing.

PM me if you want some of the ACT preparation materials. The practice books are free, and there is an online version (but it's a bit tedious to print out.)