| Altamont High School |
| Athens High School |
| Beecher City Jr/Sr High School |
| Brimfield High School |
| Bunker Hill High School |
| Calhoun High School |
| Canton High School |
| Carrollton High School |
| Cerro Gordo High School |
| Christ Our Savior Lutheran High School |
| Collinsville High School |
| Cumberland High School |
| Dieterich High School |
| Eastland High School |
| Edwardsville High School |
| Effingham High School |
| Elmwood Jr/Sr High School |
| Faith Christian School |
| Foreston Jr/Sr High School |
| Franklin High School |
| Full Armor Christian Academy |
| Galena High School |
| Galena High School |
| Galva Jr/Sr High School |
| Gardner South Wilmington High School |
| Geneseo High School |
| Greenfield High School |
| Highland High Schoool |
| Illinois Valley Central High School |
| Jersey Community High School |
| Leland High School |
| Marengo Community High School |
| Marshall High School |
| Milledgeville High School |
| Momence High School |
| Morrison Community High School |
| Mount Pulaski High School |
| Murphysboro High School |
| Newton Community High School |
| Nokomis High School |
| Odin High School |
| Parkview Christian Academy |
| Patoka Sr High School |
| Polo Community High School |
| PORTA High School |
| Prairie Central High School |
| Prophetstown High School |
| Quincy Notre Dame High Schoo |
| Quincy Senior High School |
| Reed-Custer High School |
| Sangamon Valley High School |
| Scales Mound High School |
| Southwestern High School |
| St. Anthony High School |
| Staunton High School |
| Stewardson-Strasburg High School |
| Teutopolis High School |
| Unity High School |
| Washington Community High School |
| West Central |
| Wethersfield High School |
