I don't know the numbers for MIT specifically, but most top-tier (Ivy-equivalent) private colleges have very generous financial aid, and consequentially very lo

I don't know the numbers for MIT specifically, but most top-tier (Ivy-equivalent) private colleges have very generous financial aid, and consequentially very low levels of student debt. It's when you go down to the second tier and below that student debt becomes a serious problem, as lots of schools try to match the Ivy experience but without the benefit of a large old-money endowment to subsidize financial aid.