| Rank | Institution | Region |
|---|---|---|
| 6 | California Institute of Technology | Pasadena, CA |
| 6 | Duke University | Durham, NC. |
| 6 | Johns Hopkins University | Baltimore, MD |
| 10 | University of Pennsylvania | Philadelphia, PA. |
| 11 | Cornell University | Ithaca, NY |
| 11 | University of Chicago | Chicago, IL |
