Depends on if you're flying or driving. Go light on the clothes, I wore the same thing all the time + costume. Take a few vital shoes. Definitely bring one or two professional outfits for classes and traditions.
We took coupons and went out and bought a ton of toiletries, kitchen things, general life things at home (where it was cheaper) before I went and I had supplies that lasted me the whole 6 months. Of course that won't work if you're flying. Coffee maker, nonperishable foods, sheets and comforter, pictures and other things from home you want. Laundry basket (no elevators, I took one that rolls on the ground, might be easier).
For Dec/January, definitely bring a couple pairs of jeans and long-sleeved/sweatshirts. It's nice during the day but around 9 it can be cold (for Floridians at least). I wore Fall type clothes mostly in dec. You won't need as much as you think and you'll forget the most general things but you can buy those the first few days you're there.