Well no wonder. The New York Times' Upshot looked a study of the economic demographics of who goes to which colleges (or to college at all) and came up with some stark findings. If your parents were part of the one percent, you have to screw up pretty badly not to have a chance to attend an elite college. If your parents were part of the 60 percent of the population which earns less (often a lot less) than $65K annually, even if you get into one of these places, the largest fraction of your classmates will be children of the one percent.
A few schools are different. And, lo and behold, USF is one of them.