<p>Princeton Review surveys students on 379 campuses and sifts through the responses to create lists of the top 20 schools for everything from beer drinking to professor accessibility. This is the top 20 list for the colleges where students study the most:</p>
<h1>1 - Harvey Mudd College</h1>
<h1>2 - California Institute of Technology, Pasadena, CA</h1>
<h1>3 - Franklin W. Olin College of Engineering, Needham, MA</h1>
<h1>4 - Reed College</h1>
<h1>5 - Middlebury College</h1>
<h1>6 - Swarthmore College</h1>
<h1>7 - Massachusetts Institute of Technology</h1>
<h1>8 - Marlboro College</h1>
<h1>9 - Carleton College</h1>
<h1>10 - Princeton University</h1>
<h1>11 - Gettysburg College</h1>
<h1>12 - The Cooper Union for the Advancement of Science and Art</h1>
<h1>13 - Grinnell College</h1>
<h1>14 - Carnegie Mellon University</h1>
<h1>15 - Harvard College</h1>
<h1>16 - University of Chicago</h1>
<h1>17 - Cornell University</h1>
<h1>18 - Haverford College</h1>
<h1>19 - Worcester Polytechnic Institute</h1>
<h1>20 - Wellesley College</h1>
<p>There is also a list for the 20 schools where students study least. </p>