<ol>
<li>Jesse Douglas- Columbia PhD, taught at CCNY (DECEASED)</li>
<li>John Milnor- Princeton PhD, teaches at SUNY Stony Brook </li>
<li>Paul Cohen- Chicago PhD, taught at Stanford (DECEASED)</li>
<li>Stephen Smale- Michigan PhD, mostly taught at Berkeley (RETIRED FROM UCB)</li>
<li>John Thompson- Chicago PhD, teaches at Cambridge and UF </li>
<li>Charles Fefferman- Princeton PhD, teaches at Princeton</li>
<li>Daniel Quillen- Harvard PhD, taught at MIT and Oxford (RETIRED)</li>
<li>William Thurston- Berkeley PhD, teaches at Cornell </li>
<li>Shing Tung Yao- Berkeley PhD, teaches at Harvard</li>
<li>Michael Freedman- Princeton PhD, taught at UCSD (CURRENTLY DOESN’T TEACH)</li>
<li>Edward Witten- Princeton PhD, taught at Princeton (AT IAP, DOESN’T TEACH)</li>
<li>Curtis McMullen- Harvard PhD, teaches at Harvard</li>
</ol>
<p>Of the 12…2 are dead, 2 have research positions, and 2 are retired. That leaves:</p>
<p>2 Harvard
1 Cornell
1 Florida (graduate research professor)
1 Princeton
1 SUNY Stony Brook (retired from teaching, research professor)</p>
<p>That leaves only 4 Fields medalists who actually teach: 2 at Harvard, 1 at Cornell, and 1 at Princeton. See what I mean about a small pool?</p>