<p>In order: </p>
<p>Averages of ranking between 1987 through 2007</p>
<p>Harvard University___________________ 1.7
Princeton University_______________<strong><em>2.1
Yale University</em></strong>___________________ 2.4
Stanford University <strong><em>4.3
MIT </em></strong><strong><em>5.5
Duke University</em></strong>____________ 6.3
Caltech____________________________ 6.5
Dartmouth College_________________<strong><em>8.4
University of Pennsylvania</em></strong><strong><em>10.1
Columbia University</em></strong><strong><em>10.4
University of Chicago</em></strong>______________ 10.6
Cornell University____________<strong><em>11.9
Brown University</em></strong>__________________ 13.0
Northwestern University_______________ 13.4
Johns Hopkins University____________<strong><em>14.1
Rice University</em></strong>____________________ 14.5
Washington University in St. Louis____<strong><em>16.8
University of California at Berkeley</em></strong><strong><em>18.3
Emory University</em></strong><strong><em>18.7
University of Notre Dame</em></strong> 19.2
Vanderbilt University____________<strong><em>20.2
University of Virginia</em></strong><strong><em>20.9
Georgetown University</em></strong><strong><em>21.6
University of Michigan at Ann Arbor</em></strong>____ 21.9
Carnegie Mellon University____________<strong><em>22.3
UNC at Chapel Hill</em></strong>______<strong><em>23.8
University of California at Los Angeles</em></strong>__ 24.3
Tufts University_______________________ 26.5
University of Southern California 35.7</p>