I'm just going to post my opinion.Please don't get mad....
College marching bands suck. I'm sorry if anyone is involved in one, but, really, I can't stand them, PERSONALLY. I'd recommend joining a Drum corps next summer, when you're done with school (and practices throughout the year.) OR if you're money-tight, try a senior corps.
In the NY/PA region, we have a bunch. (I'm southern Jersey myself.) Bushwhackers is a Senior Corps up north that I know people who have been in it or are currently in it. Also, try The Cadets of Bergen County if you want to try a Drum Corps. They're really good.
Personally, I'm going out for Jersey Surf for the next season. :] But we might be a bit more southern than what you're looking for.
Feel free to PM me for any questions. :]