| University of Chicago | 24 | 2.8 | 2.5 | 18 | 75 | 6 | 25 | 15 | 5 | 1 | 1 | 1 | 1 | ||
| University of Illinois, Urbana-Champaign | 9 | 1.0 | 0.9 | 9 | 100 | 0 | 7 | 2 | |||||||
| University of Illinois at Chicago Circle | 1 | 0.1 | 0.1 | 0 | 1 | 100 | 1 | ||||||||
| Total | 41 | 4.7 | 4.2 | 31 | 10 | 26 | 9 | 3 | 1 | 1 | 1 | ||||
| Indiana | |||||||||||||||
| Indiana University | 7 | 0.8 | 0.7 | 6 | 85.7 | 1 | 14.3 | 5 | 1 | 1 | |||||
| Purdue University | 3 | 0.3 | 0.3 | 2 | 66.7 | 1 | 33.3 | 1 | 2 | ||||||
| Total | 10 | 1.2 | 1.0 | 8 | 2 | 5 | 2 | 3 | |||||||
| Iowa | |||||||||||||||
| University of Iowa | 12 | 1.4 | 1.2 | 5 | 41.7 | 7 | 58.3 | 5 | 5 | 2 | |||||
| Grinnell College | 1 | 0.1 | 0.1 | 0 | 1 | 100 | 1 | ||||||||
| Total | 13 | 1.5 | 1.3 | 5 | 8 | 5 | 6 | 2 | |||||||
| Kansas | |||||||||||||||
| University of Kansas | 5 | 0.6 | 0.5 | 3 | 60 | 2 | 40 | 3 | 2 | ||||||
| Total | |||||||||||||||
| Michigan | |||||||||||||||
| Kalamazoo College | 1 | 0.1 | 0.1 | 1 | 100 | 0 | 1 | ||||||||
| Michigan State University | 1 | 0.1 | 0.1 | 1 | 100 | 0 | 1 | ||||||||
| Oakland University | 1 | 0.1 | 0.1 | 0 | 1 | 100 | 1 | ||||||||
| University of Michigan | 14 | 1.6 | 1.5 | 7 | 50 | 7 | 50 | 6 | 4 | 1 | 3 | ||||
| Western Michigan University | 1 | 0.1 | 0.1 | 0 | 1 | 100 | 1 | ||||||||
| Total | 18 | 2.1 | 1.9 | 9 | 9 | 7 | 5 | 2 | 4 | ||||||
| Minnesota | |||||||||||||||
| University of Minnesota | 4 | 0.5 | 0.4 | 1 | 25 | 3 | 75 | 1 | 2 | 1 | |||||
| Ohio | |||||||||||||||
| Antioch College | 2 | 0.2 | 0.2 | 1 | 50 | 1 | 50 | 1 | 1 | ||||||
| Case Western Reserve University | 2 | 0.2 | 0.2 | 2 | 100 | 0 | 2 | ||||||||
| Oberlin College | 4 | 0.5 | 0.4 | 2 | 50 | 2 | 50 | 2 | 2 | ||||||
| Oberlin Conservatory | 2 | 0.2 | 0.2 | 0 | 2 | 100 | 1 | 1 | |||||||
| Ohio State University | 1 | 0.1 | 0.1 | 1 | 100 | 0 | 1 | ||||||||
| Ohio University | 1 | 0.1 | 0.1 | 1 | 100 | 0 | 1 | ||||||||
| Total | 12 | 1.4 | 1.2 | 7 | 5 | 6 | 4 | 1 | 1 | ||||||
| Wisconsin | |||||||||||||||
| Milwaukee School of Engineering | 1 | 0.1 | 0.1 | 1 | 100 | 0 | 1 |