One of the best ways to prepare for the SAT test is to study and practice. Taking practice tests helps familiarize you with the format of the SAT test, and the more familiar you are with the format, the better chance you'll have to score high. Practice tests also give you a good idea of what's on the test so you can focus your study sessions on these concepts. Along the same lines, read the study guide book that comes with most SAT practice tests, as this offers a wealth of tips you can use as you prepare.
The SAT tests math, reading and writing, so place your attention on these. For example, the SAT includes grammar questions that focus on subject-verb agreement, according to Ed Carroll, the Executive Director of High School Programs for the Princeton Review. He also suggests answering the first 15 questions on the math section because the SAT test orders them from easiest to hardest, but all the questions receive the same score for a correct answer. When practicing the essay writing section, work on your ability to clearly answer a question rather than worrying so much about your spelling and grammar, which doesn't knock your score down as much as a poor quality answer.
The classic advice to have two sharpened pencils before taking a test applies to the SAT. You also need an eraser. Take a watch as well, recommends Shaan Patel, author of "SAT 2400 in Just 7 Steps: Perfect-score SAT Student Reveals How to Ace the Test." A watch helps you gauge time so you know if you can slow down or if you need to speed up to get all the questions answered. A graphing calculator can also help you do well on the SAT.
Get a good night's rest the day before the exam. If you're tired, you won't be able to concentrate like you would if you're well rested. Many SAT tests start quite early, so plan accordingly to get a solid seven to eight hours of sleep. Eat a well-balanced breakfast as well, Carroll recommends. If you're hungry you'll be distracted, and that can have a negative impact on your score. Include some fiber and protein in your breakfast to keep you full for the several hours you'll be testing.