USC (along with other private schools suchs as Gtown, Finch, Albany, BU, etc.) are not known to be very generous when it comes to financial aid. If you look at the average debt of graduates from US News, they hover around $135k. A friend of mine received no loans and is paying ~$50k a year to cover all of his expenses at SC. Another friend of mine calculuated that she'll owe close to $200k after she graduates from Albany. Of course, this varies from student to student. Contact USC and see what kind of aid they'll be willing to offer and/or match with another school.