Full disclaimer: I'm a sophomore at Yale, my adviser last year was an admissions officer, and a friend of mine works in the admissions office. I'm also friends with the girl photographed, but that's irrelevant :) This is roughly how admissions works at Yale: 1. An officer reviews your application for 20-25 minutes. 1a. Some kids are clear rejects. 1500/2400 SAT and a 2.7 GPA, with no activities usually does the trick…
My understanding is that 0% of MIT admissions is non-academic admits (legacy, recruited athletes, development, under-represented minorities). Is that incorrect?
Caltech did this at one time with women (I don't know how they do it now). They would seek out high school women who showed promise in math and science, and encourage them to consider Caltech. Women who were accepted would be given trips for themselves and their parents to come visit the campus where the benefits of Caltech could be pitched.