<p>I don’t know anything about the acceptance rates, but I do know what a perfect SAT score guarantees you: at schools of such high caliber such as MIT, a perfect SAT score will guarantee you that, should you be rejected, it wasn’t because of your score. That’s about it, really. It definitely doesn’t mean it will necessarily get you in, and it will probably be seen just as good as a 1550 (or a 2350 or whatever). IMO, at least.</p>