| Colbert Heights High School | - | Varsity | Small | 0 | | |
| Colchester High School | - | Varsity | - | 0 | | |
| Cold Spring Harbor High School | - | Varsity | Small | 0 | | |
| Cold Spring Harbor High School | - | Varsity | Large | 0 | | |
| Cold Spring Harbor High School | - | Varsity | Small | 0 | | |
| Cold Spring Harbor High School | - | Varsity | - | 0 | | |
| Coldspring-Oakhurst High School | - | Varsity | Small | 0 | | |
| Colleyville Heritage High School | - | Varsity | Medium | 0 | | |
| Colleyville High School | - | Junior Varsity | - | 0 | | |
| Collierville High School | - | Junior | - | 0 | | |
| Collierville High School | - | Varsity | - | 0 | | |
| Collierville High School | - | Varsity | - | 0 | | |
| Colonial High School | - | Varsity | - | 0 | | |
| Colonial High School | - | Varsity | - | 0 | | |
| Colonial High School | - | Junior | - | 0 | | |
| Colonial High School | - | Varsity | - | 0 | | |
| Colton High School | - | Varsity | - | 0 | | |
| Colton High School | - | Varsity | Small | 0 | | |
| Columbia Academy | - | Open | - | 0 | | |
| Columbia Academy | - | Varsity | Medium | 0 | | |
| Columbia Academy | - | Varsity | Small | 0 | | |
| Columbia Academy | - | Varsity | Small | 0 | | |
| Columbia Central High School | - | Varsity | Medium | 0 | | |
| Columbine High School | - | Varsity | Large | 0 | | |
| Columbine High School | - | Varsity | Small | 0 | | |
| Columbine High School | - | Varsity | Medium | 0 | | |
| Columbine High School | - | Varsity | Large | 0 | | |
| Columbine High School | - | Varsity | Medium | 0 | | |
| Columbine High School | - | Varsity | Medium | 0 | | |
| Columbine High School | - | Junior | Small | 0 | | |
| Columbine High School | - | Varsity | - | 0 | | |
| Columbus High School | - | Varsity | Medium | 0 | | |
| Columbus High School | - | Varsity | Medium | 0 | | |
| Columbus High School | - | Varsity | Medium | 0 | | |
| Combs High School | - | Varsity | Small | 0 | | |
| Comfort High School | - | Varsity | Small | 0 | | |
| Comfort High School | - | Varsity | Small | 0 | | |
| Commack High School | - | Varsity | Medium | 0 | | |
| Commack High School | - | Varsity | Medium | 0 | | |
| Commack High School | - | Varsity | Medium | 0 | | |
| Community School of Davidson | - | Varsity | Medium | 0 | | |
| Comsewogue High School | - | Varsity | Small | 0 | | |
| Comsewogue High School | - | Varsity | Small | 0 | | |
| Concord High School | - | Varsity | Medium | 0 | | |
| Concordia Lutheran High School | - | Varsity | Large | 0 | | |
| Conley High School | - | Varsity | Medium | 0 | | |
| Conley High School | - | Varsity | Medium | 0 | | |
| Conner High School | - | Varsity | Small | 0 | | |
| Conner High School | - | Varsity | Large | 0 | | |
| Conner High School | - | Varsity | Medium | 0 | | |