1、California Institute of Technology 5.0
1、Stanford University(CA) 5.0
3、Harvard University(MA) 4.9
3、Massachusetts Institute of Technology(MIT) 4.9
3、Princeton University (NJ) 4.9
3、University of California --Berkeley 4.9
7、Cornell University(UY) 4.7
7、University of Chicogo 4.7
9、University of Illinois--Urbana-Champaign 4.5
10,Columbia University (NY) 4.3
10,University of California--Santa Barbara 4.3
10,Yale University(CT) 4.3