| Tier | Texts |
|---|---|
| S | Midwest |
| A | Wild West, New England, Guam |
| B | Plains, Deep South, Rocky Mountain West, Extra Continental |
| C | Appalachia, Southwest, Pacific Northwest, Retirement South |
| D | West Coast |
| Tier | Texts |
|---|---|
| S | Midwest |
| A | Wild West, New England, Guam |
| B | Plains, Deep South, Rocky Mountain West, Extra Continental |
| C | Appalachia, Southwest, Pacific Northwest, Retirement South |
| D | West Coast |
