| Annville-Cleona High School | - | Varsity | Medium | 0 | | |
| Antioch High School | - | Varsity | Medium | 0 | | |
| Apopka High School | - | Varsity | Medium | 0 | | |
| Apple Valley High School | - | Varsity | Medium | 0 | | |
| Arab High School | - | Varsity | Medium | 0 | | |
| Aragon High School | - | Varsity | Medium | 0 | | |
| Arapahoe High School | - | - | - | 0 | | |
| Arapahoe High School | - | - | - | 0 | | |
| Arapahoe High School | - | Junior | - | 0 | | |
| Arapahoe High School | - | Varsity | Medium | 0 | | |
| Arcadia High School | - | - | - | 0 | | |
| Arcadia High School | - | - | - | 0 | | |
| Archbishop Carroll High School | - | Varsity | Medium | 0 | | |
| Archbishop Chapelle High School | - | Varsity | - | 0 | | |
| Archbishop Hannan High School | - | Varsity | Medium | 0 | | |
| Archbishop Rummel High School | - | Varsity | Large | 0 | | |
| Archbishop Rummel High School | - | Varsity | Medium | 0 | | |
| Archbishop Ryan High School (USA) | - | Varsity | Medium | 0 | | |
| Archbishop Shaw High School | - | Varsity | Medium | 0 | | |
| Archbishop Shaw High School | - | Varsity | Large | 0 | | |
| Archbishop Wood High School | - | Junior | Large | 0 | | |
| Arendell Parrott Academy | - | Varsity | Medium | 0 | | |
| Arlington High School | - | Varsity | Medium | 0 | | |
| Arlington High School | - | Varsity | Medium | 0 | | |
| Arvada West High School | - | Varsity | Medium | 0 | | |