| Region 1-Northeast: Division 1: New England | ||
| State | Institution Frequency (n) | Percent (%) |
| Connecticut | 4 | 23.5 |
| Maine | 1 | 5.9 |
| Massachusetts | 9 | 52.9 |
| New Hampshire | 1 | 5.9 |
| Rhode Island | 1 | 5.9 |
| Vermont | 1 | 5.9 |
| Total | 17 | 100.0 |
| Region 1-Northeast: Division 2: Mid-Atlantic | ||
| New Jersey | 3 | 10.3 |
| New York | 18 | 62.1 |
| Pennsylvania | 8 | 27.6 |
| Total | 29 | 100.0 |
| Region 2-Midwest: Division 3: East North Central | ||
| Illinois | 14 | 42.4 |
| Indiana | 4 | 12.1 |
| Michigan | 8 | 24.2 |
| Ohio | 5 | 15.2 |
| Wisconsin | 2 | 6.1 |
| Total | 33 | 100.0 |
| Region 2-Midwest: Division 4: West North Central | ||
| Iowa | 2 | 12.5 |
| Kansas | 2 | 12.5 |
| Minnesota | 1 | 6.3 |
| Missouri | 5 | 31.3 |
| Nebraska | 4 | 25.0 |
| North Dakota | 1 | 6.3 |
| South Dakota | 1 | 6.3 |
| Total | 16 | 100.0 |
| Region 3-South: Division 5: South Atlantic | ||
| Delaware | 1 | 3.0 |
| Florida | 5 | 15.2 |
| Georgia | 5 | 15.2 |
| Maryland | 3 | 9.1 |
| North Carolina | 7 | 21.2 |
| South Carolina | 2 | 6.1 |
| Virginia | 5 | 15.2 |
| Washington, D.C. | 3 | 9.1 |
| West Virginia | 2 | 6.1 |
| Total | 33 | 100.0 |