<p>I'm suppose to take the SATs tomorrow, but I'm getting really scared that I'm going to get a real low score, because I didn't study much. I know in order to change your test date, you have to call them within 2 and a half weeks, but I was wondering if it is possible to change it on the test day? Or would it be a better idea for me to be absent, pay the 20 dolllars, and then call them later to change the test date?</p>