<p>Some schools do Superscore the ACT, much fewer than do the SAT. Just because a school superscores the SAT does not mean they will the ACT.
You might be able to do a google search, however it is probably far more accurate to contact the admissions offices of the schools you are applying to. Changes are being made frequently and you want to make sure you get the right information.
The SAT/ACT superscores are rarely used in the case of scholarships. Again, these are things to check.</p>