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