Forgive me for reviving the topic, but just ran across it and wanted to throw my 2c in. Here at University at Buffalo we have Jean Kopperud, a fantastic teacher with a great personality. I've personally heard a lot of really good reviews re: her teaching, and from my own personal interaction I know she's really pleasant. More about her here:
http://www.music.buffalo.edu/faculty...ud/index.shtml
We also have a good Math department. I don't know a lot about it but I do know we allow extracurriculars in outside fields. Math dept. website here:
http://www.math.buffalo.edu/
Be aware though that UB is a theory based school, at the moment anyway. So you'll have the best theory training and as many opportunities to perform as you could ever hope to handle, but the ensembles aren't exactly magical.