Preparing for an exam can be stressful and time-consuming, but it doesn't have to be. There’s no need to stress out or cram. By doing a couple simple things ahead of time, you can ensure that you are confident and ready material you need to review. For instance, if you have to review material for an entire semester, you might want to start studying a few weeks prior. However, if you are just taking a test that covers material over a few chapters, a week prior or even three tfor anything that comes up on the test.