<p>bo, I see, but I think we don’t have such detailed data available, so the best we can do (which is not very good) is to extrapolate from schools known to produce a <em>lot</em> of future PhDs; only <em>perhaps</em> do such schools make it easier to get into <em>top</em> grad programs.</p>
<p>dilksy, same thing, it’s just a possible loose association, just one way to identify one kind of quality undergrad preparation, and <em>maybe</em> it applies to other aspects, maybe not.</p>