Research has shown that reviewing new material within 24 hours of hearing it increases your retention of that material by about 60%. This means that you will be 60% ahead of the game the next time you walk into class. If you want to significantly reduce the time necessary to prepare for exams, this is the way to do it.

Reviewing material before the next class enable you to identify points of confusion or omission in your notes, which prepares you to ask the questions you need to ask before the next class. Confusion is your worst enemy. 

Some great ways to review include quizzing your classmates, talking to yourself in the mirror (yes I’m serious) and reviewing material on the tram or train ride in the morning. 

Remember, review, revise, reduce study time.