I agree with Laura, I'm not exactly sure about USC costs, but at most schools being in a soror, if you live in the house, or greek dorm or whatever is provided; it's either about equal or only a tiny bit more than paying for the normal dorms, if this is true at USC, and Newbie is willing to work in her semester off for whatever difference there may be (if there is one) in price, then I totally think she should go for it !!
