<p>Overall all, certainly MIT is the best in both science and engineering. Princeton is also great, but a notch below. Yale is a good place, but can not be compared to the other 2.</p>
<p>In pure math, Princeton is THE BEST in the world. MIT is one of the best, but probably behind Harvard and Berkeley as well.</p>
<p>In physics, MIT and Princeton are among the best, along with Caltech, Berkeley, Harvard, and Stanford.</p>
<p>For other science fields, among these 3 schools, it should be MIT hands down.</p>
<p>For engineering, MIT>Princeton>Yale. </p>
<p>So in any case, picking MIT or Princeton is a better choice than Yale. If you want to learn a lot humanities besides science, or focus on purely theoretic side of sciences, Princeton might be a better choice than MIT. Otherwise, MIT is your best bet.</p>
<p>But you do want to go to Yale if you want to be the president of the country.</p>