Advice for Paying for USC? Any Help and Thoughts Appreciated!

<p>Trying to figure out why USC is the ONLY school not offering any financial aid - Son accepted at USC, Vanderbilt, Baylor, UNC and Univ. Michigan - with financial aid offers ranging between $20,000 - $32,000 per year - CSS & FAFSA provided so same information given to all the schools yet USC has our EFC at full COA???</p>