| A-C Central High School | Ashland | Illinois Valley | 2023 |
| Brownstown High School | Brownstown | Eastern | 2023 |
| Central A & M High School | Moweaqua | Eastern | 2023 |
| Chadwick-Milledgeville High School | Milledgeville | Northwest | 2023 |
| Danville High School | Danville | Kickapoo | 2023 |
| DeLand-Weldon High School | DeLand | Kickapoo | 2023 |
| Edwardsville High School | Edwardsville | Kaskaskia | 2023 |
| Elverado High School | Elkville | Little Egypt | 2023 |
| EPIC Academy | Chicago | Chicago | 2023 |
| Evanston Township High School | Evanston | Northeast | 2023 |
| Fremd High School | Palatine | Northeast | 2023 |
| Fulton High School | Fulton | Northwest | 2023 |
| Glenbard South High School | Glen Ellyn | Northeast | 2023 |
| Hartsburg-Emden High School | Hartsburg | Cenois | 2023 |
| Heyworth High School | Heyworth | Cenois | 2023 |
| Hillsboro High School | Hillsboro | Eastern | 2023 |
| Hoffman Estates High School | Hoffman Estates | Northeast | 2023 |
| Joppa-Maple Grove High School | Joppa | Little Egypt | 2023 |
| Leyden High School | Franklin Park | Northeast | 2023 |
| Marquette Catholic High School | Alton | Kaskaskia | 2023 |
| Maryville Christian School | Maryville | Kaskaskia | 2023 |
| Morrison High School | Morrison | Northwest | 2023 |
| Normal Community High School | Normal | Cenois | 2023 |
| Northside College Prep High School | Chicago | Chicago | 2023 |
| Oak Park and River Forest High School | Oak Park | Northeast | 2023 |
| Oakland High School | Oakland | Eastern | 2023 |
| Orion High School | Orion | Blackhawk | 2023 |
| Oswego High School | Oswego | North Central | 2023 |
| Ottawa Township High School | Ottawa | Prairie 8 | 2023 |
| Paxton-Buckley-Loda High School | Paxton | Kickapoo | 2023 |
| Prophetstown High School | Prophetstown | Northwest | 2023 |
| Rosary High School | Aurora | North Central | 2023 |
| Round Lake High School | Round Lake | Northeast | 2023 |
| Serena High School | Serena | North Central | 2023 |
| Woodland High School | Streator | Prairie 8 | 2023 |