Car--
Education and Psych are both great programs at USC. I know you expressed some reservations about the cost of SC, so here's my advice -- Make sure you meet all financial aid deadlines. USC guarantees meeting your need, but only if you get all paperwork in on time. And, if your family thinks USC has overestimated what they can realistically pay--challenge it--write a letter describing the circumstances and ask for a reevaluation. 99 times out of 100, this works like a charm.
Santa Clara--I seem to remember reading recently that the administration has banned greek life from campus.
Amy