<p>The numbers I have seen for MIT’s enrollment last year support to some degree what JHS is saying – 70% of those who turn down MIT turn it down for an Ivy, Stanford, or Caltech. Only about 4% of MIT admits (~10% of those who turn down MIT overall) turn down MIT for a state school.</p>
<p>
In all seriousness, Facebook.</p>
<p>EDIT:
In MIT’s case, it’s Michigan and Georgia Tech first, the rest nowhere – the rest of the state schools get one or two kids, presumably in-state.</p>