Top 25 universities in USA:
1. Harvard University
2. Princeton University
3. Yale University
4-5. Massachusetts Institute of Technology
4-5. Stanford University
6-7. University of Pennsylvania
6-7. California Institute of Technology
8-10. Columbia University
8-10. Duke University
8-10. University of Chicago
11. Dartmouth College
12-13. Northwestern University
12-13. Washington University
14. Cornell University
15. Johns Hopkins University
16. Brown University
17. Rice University
18-20. Emory University
18-20. University of Notre Dame
18-20. Vanderbilt University
21. University of California at Berkeley
22. Carnegie Mellon University
23-24. Georgetown University
23-24. University of Virginia
25. University of California at Los Angeles