<p>@gravitas2 People like Andrew Luck stayed back 4 years despite having a huge income potential. So it must be them “start-ups”.</p>
<p>When I went to some parents’ meeting at beginning of freshman year, I met a couple who are on the alumni board. Their 5th or 6th kid was starting at Stanford and the first one had started 7 or 8 years before and was still there. Essentially all their kids were there at the same time from freshman to PhD candidates and they had not seen any other college.</p>