1 Carnegie Mellon University
　　1 Massachusetts Institute of Technology

　　1 Stanford University

　　1 University of California--Berkeley

　　5 Cornell University

　　5 University of Illinois--Urbana-Champaign

　　7 University of Washington

　　8 Princeton University

　　8 University of Texas--Austin

　　10 Georgia Institute of Technology

　　11 California Institute of Technology

　　11 University of Wisconsin--Madison

      13 University of Michigan--Ann Arbor

　　14 University of California--Los Angeles

　　14 University of California--San Diego

　　14 University of Maryland--College Park

　　17 Columbia University

　　17 Harvard University

　　17 University of Pennsylvania

　　20 Brown University

　　20 Purdue University--West Lafayette

　　20 Rice University

　　20 University of Massachusetts--Amherst

　　20 University of North Carolina--Chapel Hill

　　20 University of Southern California