For English like vocab I write all the words on flashcard ( one time studying then I go over them(second time) I test myself ,what ever words i don't know,I'll put in a seperate pile. then go through that pile and keep doing that process
for history I make power points your reading and writing the information over again exposing yourself twice
or you can YouTube videos on the subject
For me, it depends on the subject. Because I'm weird. For social studies related classes, usually just reviewing facts is enough to let me get good test/quiz scores. For science classes, I review the topics that I had the most trouble with, because science comes naturally to me, so the rest is easy. For math, since I struggle with that the most, I put the most study time into it. I take whatever topics from the class that confused me most, and just do random problems related to that topic. This actually helps a great deal.
