Whoa, I forgot this was styleforum; you don't need kiton, when I say you needed a suit I was thinking more likea conservative looking TaT that you can get for $500ish give or take, but you need a suit if you plan on doing more than just attending class for 4 years... that is to include finding gainful employment, and/or the steps towards that, like internships interviews, dinners where you will not be looked upon kindly for showing up in street clothes, etc. You need a suit, every one does. If I had a son, I'd buy him a decent suit and pair of shoes whenever it looked like he was done growing, because there are occasions to which to wear a suit, where other things will not be as good.
Extracurricular clubs will have formals, you will have presentations or groups, you will have interviews for summer jobs and internships, you will have interviews for actual jobs later down the line when it's time to graduate; nobody will grill you on having only one suit when you're <22 or 23 and not yet working, so you can go ahead and wear that jawn to the formals, the presentations, etc, but don't dress badly because other people choose to dress badly.
Other days in college though, are completely made for rocking out all day and night in a black leather jacket that you beat the hell out of, a white tee, and some great jeans and sneakers.