My school is bad at the ACT

<p>I heard that a 30 ACT is like the 99%. However, accordind to conversion charts, a 30 ACT ~ 2000 SAT. A 2000 SAT is only in the 93%. This doesn't make sense. Shouldn't a 30 ACT = 2200 SAT since that was the cutoff for 99%?</p>