| Abbreviation | Definition |
|---|---|
| CHS | Calabasas High School |
| CHS | Camas High School |
| CHS | Camperdown High School |
| CHS | Capital High School |
| CHS | Capuchino High School |
| CHS | Carlsbad High School |
| CHS | Carmel High School |
| CHS | Carrboro High School |
| CHS | Cedar High School |
| CHS | Centennial High School |
| CHS | Centerville High School |
| CHS | Central High School |
| CHS | Century High School |
| CHS | Chalmette High School |
| CHS | Chaparral High School |
| CHS | Charlotte High School |
| CHS | Charlottesville High School |
| CHS | Charter High School |
| CHS | Chaska High School |
| CHS | Chelmsford High School |