<p>Marite:</p>
<p>I know what you are saying but the data says otherwise.</p>
<p><a href=“Faculty and Research | The ILR School”>Faculty and Research | The ILR School; page 18.</p>
<p>At least in the sciences and as of the late 90s, more students at Harvard earned their PhDs with baccalaureate degrees from Harvard than Princeton, MIT and Michigan combined and at over 3 times the number of any school. The same pattern was found at MIT, Berkeley and Michigan. It may be different for the humanities but at least in the sciences the pattern is clear. The latest data for 2000-2005 PhDs has recently been released and I doubt it will show much difference. </p>
<p>The explanation for the difference could simply be that the admission rate between for instance MIT and Harvard undergrads for a Harvard PhD program is the same but that many more Harvard undergrads apply.</p>