I took the SAT and ACT not too long ago and to say the least, they cover everything from PA to basic Trig.
The reading sections are fairly easy and the best way to do good on those, is to read the questions first, and then read the section. On the writing portion, take your time. You are given a few hours to do this test for a reason, don't waste any of that time by "finishing early".
I got a 31 on the ACT and a 2100 on the SAT, which are both extremely above average.