<p>What if the second time I took the SAT, I went up in all sections, though my scores are not perfect overall... and then decided to take it a third time and somehow all my scores went down? Would it HURT me/ somehow invalidate my second score?</p>
<p>Meh, depends on by how much you went down. Going down 10 or 20 points per section is all right, I guess, but something like 50+ points would look...eh.</p>