Most likely, you will have a roommate. The rooms are big and there are two beds. Also, the two of you will be the only college students in attendance, so there is an immediate bonding. This is where first impressions are made, so dress your best. This does not mean bring out the tux and the long, flowing white dress.
Business attire is more suitable.
After the first night, the tone is set by the participants. The Foundation encourages a casual atmosphere and does not require ties and jackets for men. However, many of the men may disregard this. The best thing to do is bring a variety of clothes to wear. Dress pants and a nice sweater are always acceptable for men, and women may wear either slacks or a skirt.