Transporting a fish in a bucket over a shorter distance isn't a huge deal. When I've done that I usually fill the bucket around halfway with water (to stop sloshing) and put a lid on the top. IMHO a lid is a must, because marine fish are really prone to jumping.
Transporting a longer distance like you're describing though in a bucket could be problematic. First, temperature could drop considerably if it's cold out. Second, you need to worry more about oxygenation staying high enough - particularly if you leave a lid on. The fish would probably be fine either way, but I might consider getting one of those battery-powered airstones and putting a little tube into the bucket to ensure there is some water/air circulation.
I presume you're just talking about a teardown and rebuild when you go home at the end of the semester? If you go home for the weekend or whatever, just leave your fish in the tank while you are gone. I'd even suggest this if you have a week off or something - the fish can survive being hungry for a few days better than having wild swings in water temperature/chemistry.