Review a study guide to prepare for the type of questions asked and the wording of such questions. Study the guide's helpful hints for taking the test. Purchase a general study guide if you are taking several different standardized tests.
Schedule study periods every few days to keep the material fresh in your mind. Alternate between the math/science portion and the English/reading portion.
Sit for a practice test. Prepare for the hours of sitting and deadline pressure by scheduling a time on the weekend to take the entire practice test in one sitting as you would the exam. Review your results afterward to determine what needs to be improved.
Consult a Tutor or Learning Center. A tutor or learning can help teach you the lessons you may have missed or the subjects where you are consistently getting low scores. A tutor or test-prep class can also help with simple test-taking strategies and relaxation techniques. Consult with the guidance counselor at your school about tutoring or test-prep courses or post an ad for a tutor at a local college.