| Tier | Texts |
|---|---|
| S | Michigan |
| A | Ohio State, Oregon, Penn State, USC |
| B | Illinois, Indiana, Nebraska |
| C | Rutgers, UCLA |
| D | Iowa, Maryland, Michigan State |
| F | Minnesota, Northwestern, Purdue, Washington, Wisconsin |
| Tier | Texts |
|---|---|
| S | Michigan |
| A | Ohio State, Oregon, Penn State, USC |
| B | Illinois, Indiana, Nebraska |
| C | Rutgers, UCLA |
| D | Iowa, Maryland, Michigan State |
| F | Minnesota, Northwestern, Purdue, Washington, Wisconsin |
