I just keep it chic but minimal. Simple is key. Heels are a no-no, for my campus are miles long in each direction.
There is nothing more that irks me when I see a girl wobble in her heels across campus. I think if you want to look your best for school, fine. But in something especially fickle as fashion, the most important thing is to dress appropriately for the occasion. You wouldnt wear sweats to attend to a cocktail event or likewise, sky-high heels to go to your local safeway.
All the girls in my school that dresses up for classes in full-faced makeup who looks like they are about to go clubbing gives off an aura of "look look at me", but in reality, they are quite simply ridiculously out of place in our institutions of higher education.
In addition, if you are really a full time student advancing a professional career, you should dress somewhat in par with your occupation. A poor student not yet working full time would look somewhat pathetic in career gear 24/7, especially at school. So whats the rush? When you are working professionally, you will not be able to go back to dressing young again. I think all college students should take advantage of their youth in clothing they would not be able to wear in 10-20 years. I'm sorry, but an LV to class is simply ridiculous, at least save it for an occasion more suitable.