@al2simon, I am not so sure about the “modest” part, at least as it relates to Princeton. But yeah, I think you are correct that among the most selective schools there is quite a bit more overlap than differentiation. And fwiw, I don’t find that to be a negative at all. I think some kids are drawn to testing themselves against the “best of the best”, and for those kids, HYPSM and a handful of others are going to scratch that itch. I have one kid for whom that type of environment was a priority and another who could care less. Different kids looking at different schools. I get it, I really do.
@pizzagirl, again I get your point about business relationships, and I basically agree with what you are saying. My point is really that beyond the broad strokes, it seems like certain categories of universities and colleges are looking for pretty much the same things in the main. If that is the case, then I kind of get the angst exhibited by some who are really invested in going to one of a relative handful of schools, and I get why some kids apply relatively widely. On the other hand, if it is true that Penn, Vandy and Northwestern as an example, are really looking for some things distinct from the others it would be of great benefit if they would be more forthcoming in what those discrete things are.