Plains Members:
| Univ. of Arkansas |
| Colorado State University |
| University of Colorado |
| Iowa State University |
| University of Iowa |
| Kansas State University |
| University of Kansas |
| Wichita State University |
| St. Cloud University |
| St. Johns College |
| University of Minnesota |
| University of St. Thomas |
| Winona State University |
| St. Louis University |
| University of Missouri |
| Washington University |
| Creighton University |
| University of Nebraska |
| University of North Dakota |
| Oklahoma City University |
| Oklahoma State University |
| University of Oklahoma |
| Baylor University |
| Rice University |
| Southern Methodist University |
| St. Edwards University |
| Texas A&M University-C.S. |
| Texas A&M University-Galv. |
| University of Texas |