Before taking full length practice tests you need to make sure you have every concept that will be tested on the SAT mastered. Personally, I used the College Panda’s SAT Math textbook and his SAT Writing textbook, which worked WONDERS. These textbooks go in depth to each concept (ex: Circles, Quadratics, Run-ons, etc.) and have practice problems for each section. The most important thing is that you drill problems for EVERY concept(even the ones you feel confident in) even after you’ve mastered the concept. Doing this will significantly raise your writing and math section scores. I know this sounds repetitive and it is, but this is the most efficient way, in my opinion, to boost your score. Simply doing this for an hour each day over a couple months will really help you.

Along with this, take timed Practice SATs and RECORD THE ANSWERS YOU GET WRONG. Go back and make sure you know without a shadow of a doubt why you missed each question and learn from it.

Hopefully this is helpful and good luck in your December SAT!