1 Stanford University
    2 University of California—Berkeley
    2 University of California—Los Angeles
    4 Harvard University
    4 University of Michigan—Ann Arbor
    4 Yale University
    7 Princeton University
    7 University of Illinois—Urbana-Champaign
    9 Massachusetts Institute of Technology
    9 University of Minnesota—Twin Cities
    9 University of Wisconsin—Madison
    12 University of North Carolina—Chapel Hill
    12 University of Pennsylvania
    14 Columbia University
    14 Cornell University
    14 Northwestern University
    14 University of California—San Diego
    14 University of Texas—Austin
    14 University of Washington
    14 Washington University in St. Louis
    21 Carnegie Mellon University
    21 Duke University
    21 Ohio State University
    21 University of California—Davis
    21 University of Chicago
    26 Brown University
    26 Indiana University—Bloomington
    26 Johns Hopkins University
    26 University of Virginia
    30 New York University
    30 Pennsylvania State University—University Park
    30 University of California—Irvine
    30 University of Colorado—Boulder
    30 University of Iowa
    30 University of Oregon
    30 University of Pittsburgh
    30 Vanderbilt University
    38 Arizona State University
    38 Emory University
    40 University of Arizona
    40 University of California—Santa Barbara
    40 University of Florida
    40 University of Kansas
    40 University of Maryland—College Park
    40 University of Southern California