| Alton HS | CG: Regional A |
| Alton Middle School | CG: Scholastic Cadet |
| Avidity of McKendree University | CG: Independent Open |
| Belleville East HS JV | CG: Scholastic AA |
| Belleville East HS Percussion | Perc: Scholastic A |
| Belleville East HS Varsity | CG: Scholastic AA |
| Belleville East Junior Lancers | CG: Independent Regional A |
| Centralia HS | CG: Regional A |
| Collinsville HS | CG: Regional A |
| Edwardsville HS | CG: Scholastic A |
| Edwardsville HS Percussion | Perc: Scholastic A |
| Farmington HS | CG: Regional A |
| Fort Zumwalt East HS | CG: Scholastic AA |
| Fort Zumwalt North HS JV | CG: Scholastic AA |
| Fort Zumwalt North HS Varsity | CG: Scholastic A |
| Fort Zumwalt South HS | CG: Scholastic AA |
| Fort Zumwalt West HS Percussion | Perc: Scholastic B |
| Fort Zumwalt West HS Purple | CG: Regional A |
| Fort Zumwalt West HS Silver | CG: Regional A |
| Fox HS | CG: Regional A |
| Francis Howell Central HS | CG: Regional A |
| Francis Howell HS A | CG: Scholastic A |
| Francis Howell HS B | CG: Scholastic AA |
| Francis Howell HS Percussion | Perc: Scholastic A |
| Freeburg Community HS | CG: Regional A |
| Freedom Percussion | Perc: Independent Open |
| Fulton Junior High | CG: Scholastic Cadet |
| Gateway Percussion | Perc: Independent World |
| Hazelwood Central HS Percussion | Perc: Scholastic B |
| Hazelwood East HS Percussion | Perc: Scholastic Concert |
| Hillcrest HS | CG: Regional A |
| Hillcrest HS Percussion | Perc: Scholastic B |
| Hillsboro HS | CG: Scholastic AA |
| Hillsboro HS Percussion | Perc: Scholastic B |
| Illinois Valley Central HS Percussion | Perc: Scholastic B |
| Lafayette HS | CG: Scholastic A |
| Lindbergh District Middle School | CG: Scholastic Cadet |
| Lindbergh HS | CG: Scholastic AA |
| Marquette HS | CG: Scholastic AA |
| Mascoutah HS | CG: Scholastic AA |
| Mater Dei HS Percussion | Perc: Scholastic A |
| Mattoon HS | CG: Regional A |
| McCluer North HS | CG: Regional A |
| Modulation Z | Perc: Independent A |
| Murphysboro HS Percussion | Perc: Scholastic B |
| Northwest HS | CG: Regional A |
| O'Fallon Township HS | CG: Scholastic A |
| O'Fallon Township HS | CG: Regional A |
| Oakland Middle School | CG: Scholastic Cadet |
| Parkway Central HS | CG: Regional A |
| Parkway South HS | CG: Scholastic AA |
| Parkway West HS | CG: Regional A |
| Rockwood Summit HS | CG: Scholastic A |
| Saint Clair HS | CG: Scholastic AA |
| Seckman HS | CG: Scholastic AA |
| St. Charles HS | CG: Regional A |
| St. Charles West HS Percussion | Perc: Scholastic B |
| St. Francis Borgia HS | CG: Regional A |
| Stratus Percussion | Perc: Independent A |
| Timberland HS | CG: Scholastic AA |
| Washington HS A | CG: Scholastic A |
| Washington HS Open | CG: Scholastic Open |
| Washington HS Percussion | Perc: Scholastic A |
| Wentzville Holt HS | CG: Scholastic A |
| Wentzville Liberty HS | CG: Scholastic AA |
| Windsor HS | CG: Regional A |
| Zenith Independent | CG: Independent A |
