<p>Here is what I have gathered from the SATs: If you get score X one time, there is no guarantee your score will go up or down the next. Let's say you have 750 on each section giving you 2250. If you retake the test, there is a chance you could hit all cylinders and get a perfect on each section giving you 2400: math questions you know how to do, vocab you know, reading passages you get, an essay you can easily write on, and no stupid mistakes. You could also have the worst case and drop to a 700 on each section giving you a 2100: math questions you arent sure of, vocab you never studied, passages that make you fall asleep, and an essay you can't get started on. I picked these drops and increases, because your score on a section can swing 50 points based on the test and curve. If you are retaking the SATs, look at it two ways: either you lucked out and scored at your highest level or you had a bad day/the test was not suited for you. If practice test indicate that you should have 100 more points, just retake the test and you should be fine. If practice tests show you got higher, dont think that you will luck out twice in a row. Then again, it is most likely your total score will not change because you could have the best math section of your life and the worst reading on the same test, giving the same net effect. This may be why colleges take the highest score from each test instead of hte highest sitting.</p>