Limit the maximum percentage of a person's salary that can go to "loan" repayment, and put the school on the hook for anything over that amount - they have to r

Limit the maximum percentage of a person's salary that can go to "loan" repayment, and put the school on the hook for anything over that amount - they have to repay the bank or government. The problem to me is that the schools, who decide who gets in, have very little on the line if they make a bad decision. I think the percentage should be fairly high - say, 33% - but only on the amount of money a person makes above what an average high school graduate makes.