Mixing and matching highest section scores

<p>Just about every univ mixes and matches your highest scores from each section from all the times you've taken the SAT. The only one I've come across that doesn't is U Mich (irritating).
HOWEVER, most schools refuse to do this for the ACT. They only look at the composite from one test date. WHY?</p>

<p>It all depends on administrative convenience. One poster here announced that Florida State University combines sections on the ACT, and you can confirm that on that college's website.</p>

<p>right, I know some superscore ACT's too, but it's much less common. My qyestion is why?</p>