1
Massachusetts Institute of Technology
2
Harvard University
3
Yale University
4
Princeton University
5
Stanford University
6
University of Chicago
7
University of California--San Diego
8
Northwestern University
8
University of California--Berkeley
10
University of Wisconsin--Madison
11
University of California--Los Angeles
12
Columbia University
13
University of Pennsylvania
14
New York University
15
Duke University
16
Michigan State University
17
Pennsylvania State University--University Park
17
University of Michigan--Ann Arbor
19
Boston University
20
Brown University
20
Cornell University