| School Name | Grades | Students | S/T Ratio | Location |
|---|---|---|---|---|
| Crossroads Elem. | K - 5 | 924 | 16.7 | O'fallon, 63366 |
| Dardenne Elem. | K - 5 | 528 | 15.4 | O'fallon, 63368 |
| Emge Elem. | PK - 5 | 439 | 18.1 | O'fallon, 63368 |
| Forest Park Elem. | 3 - 5 | 462 | 11.6 | O'fallon, 63366 |
| Joseph L. Mudd Elem. | K - 2 | 459 | 18.4 | O'fallon, 63366 |
| Mount Hope Elem. | K - 5 | 487 | 17.4 | O'fallon, 63366 |
| Ostmann Elem. | PK - 5 | 606 | 17.9 | O'fallon, 63368 |
| Pheasant Point Elem. | K - 5 | 586 | 17.9 | O'fallon, 63368 |
| Prairie View Elem. | K - 3 | 316 | 17.6 | O'fallon, 63366 |
| Rock Creek Elem. | K - 5 | 686 | 16.9 | O'fallon, 63366 |
| Twin Chimneys Elem. | K - 5 | 648 | 17.9 | O'fallon, 63368 |
| Westhoff Elem. | K - 5 | 532 | 16.8 | O'fallon, 63366 |
| Frontier Middle | 6 | 273 | 15.1 | O'fallon, 63366 |
| Ft. Zumwalt North Middle | 6 - 8 | 1,154 | 15.8 | O'fallon, 63366 |
| Ft. Zuwmalt West Middle | 6 - 8 | 1,246 | 18.0 | O'fallon, 63368 |
| Ft. Zumwalt Hope High | 9 - 12 | 109 | 12.1 | O'fallon, 63366 |
| Ft. Zumwalt North High | 9 - 12 | 1,229 | 16.0 | O'fallon, 63366 |
| Ft. Zumwalt West High | 9 - 12 | 2,513 | 18.5 | O'fallon, 63366 |