| Northwestern High School | - | Varsity | - | 0 | | |
| Northwestern High School | - | Varsity | Large | 0 | | |
| Northwestern High School | - | Varsity | Large | 0 | | |
| Northwestern High School | - | Varsity | Large | 0 | | |
| Northwestern High School | - | Varsity | - | 0 | | |
| Northwestern High School | - | Varsity | Large | 0 | | |
| Northwood High School | - | Varsity | - | 0 | | |
| Northwood High School | - | Varsity | Medium | 0 | | |
| Northwood High School | - | Varsity | Medium | 0 | | |
| Northwood High School | - | Varsity | Small | 0 | | |
| Northwood High School | - | Varsity | Small | 0 | | |
| Northwood High School | - | Varsity | - | 0 | | |
| Norwalk High School | - | Varsity | - | 0 | | |
| Norwich Free Academy | - | Junior | - | 0 | | |
| Norwich Free Academy | - | Junior | - | 0 | | |
| Norwich Free Academy | - | Varsity | - | 0 | | |
| Norwin High School | - | Varsity | Large | 0 | | |
| Norwin High School | - | Varsity | - | 0 | | |
| Notre Dame Academy | - | Varsity | - | 0 | | |
| Notre Dame Academy | - | Varsity | Medium | 0 | | |
| Notre Dame Academy | - | Varsity | Small | 0 | | |
| Notre Dame Academy | - | Varsity | - | 0 | | |
| Notre Dame Academy | - | Varsity | - | 0 | | |
| Notre Dame Academy | - | Varsity | - | 0 | | |
| Notre Dame De Sion High School - Sion Storm | - | Varsity | - | 0 | | |
| Notre Dame High School | - | Varsity | Large | 0 | | |
| Notre Dame High School | - | Varsity | Small | 0 | | |
| Notre Dame High School | - | Varsity | - | 0 | | |
| Notre Dame High School | - | Varsity | - | 0 | | |
| Notre Dame High School | - | Varsity | Medium | 0 | | |
| Notre Dame High School | - | Varsity | - | 0 | | |
| Notre Dame High School | - | Varsity | - | 0 | | |
| Notre Dame High School (Belmont) | - | Varsity | Large | 0 | | |
| Notre Dame High School (Sherman Oaks) | - | Varsity | Large | 0 | | |
| Notre Dame Preparatory High School | - | Varsity | Medium | 0 | | |
| Notre Dame Preparatory High School | - | - | Medium | 0 | | |
| Notre Dame Preparatory High School | - | - | Medium | 0 | | |
| Notre Dame Preparatory High School | - | Varsity | Medium | 0 | | |
| Notre Dame Preparatory High School | - | Varsity | Small | 0 | | |
| NRHEG High School | - | Varsity | - | 0 | | |
| NRHEG High School | - | Varsity | Small | 0 | | |
| O.W. Holmes High | - | Varsity | - | 0 | | |
| O.W. Holmes High | - | Varsity | Small | 0 | | |
| O'Connor High School | - | Varsity | Large | 0 | | |
| Oak Creek High School | - | Varsity | Small | 0 | | |
| Oak Grove High School | - | Varsity | - | 0 | | |
| Oak Grove High School | - | Varsity | Small | 0 | | |
| Oak Grove High School | - | Varsity | Medium | 0 | | |
| Oak Grove High School | - | Varsity | Large | 0 | | |
| Oak Grove High School | - | Varsity | - | 0 | | |
| Oak Grove High School | - | Varsity | Small | 0 | | |
| Oak Grove High School | - | Varsity | Small | 0 | | |
| Oak Hall High School | - | Varsity | Medium | 0 | | |
| Oak Harbor High School | - | Varsity | - | 0 | | |
| Oak Hills High School | - | Varsity | - | 0 | | |
| Oak Hills High School | - | Varsity | - | 0 | | |
| Oak Hills High School | - | Varsity | Small | 0 | | |
| Oak Hills High School | - | Varsity | Small | 0 | | |
| Oak Hills High School | - | Varsity | - | 0 | | |
| Oak Hills High School | - | Varsity | - | 0 | | |
| Oak Mountain High School | - | Varsity | Medium | 0 | | |
| Oak Mountain High School | - | Varsity | - | 0 | | |
| Oak Mountain High School | - | Varsity | Large | 0 | | |
| Oak Park High School | - | Varsity | Medium | 0 | | |
| Oak Ridge | - | Varsity | - | 0 | | |
| Oak Ridge High School (CA) | - | Junior | - | 0 | | |
| Oak Ridge High School (CA) | - | Varsity | Medium | 0 | | |
| Oak Ridge High School (CA) | - | Varsity | Large | 0 | | |
| Oak Ridge High School (CA) | - | Varsity | - | 0 | | |
| Oak Ridge High School (CA) | - | Varsity | Large | 0 | | |
| Oakland Catholic High School | - | Varsity | - | 0 | | |
| Oakland Catholic High School | - | Varsity | Small | 0 | | |
| Oakland High School | - | Varsity | Medium | 0 | | |
| Oakland High School | - | Varsity | Medium | 0 | | |
| Oakland High School | - | Varsity | Medium | 0 | | |
| Oakland High School | - | Varsity | Small | 0 | | |
| Oakland High School | - | Varsity | Small | 0 | | |
| Oakleaf High School | - | Varsity | Small | 0 | | |
| Oakmont | - | - | - | 0 | | |
| Oakmont High School | - | Varsity | - | 0 | | |
| Oakmont High School | - | Varsity | - | 0 | | |
| Oakmont High School | - | Varsity | - | 0 | | |
| Oakmont High School | - | - | - | 0 | | |
| Oakridge School | - | Varsity | Small | 0 | | |
| Oaks Christian School | - | Varsity | Small | 0 | | |
| Oaks Christian School | - | Varsity | - | 0 | | |
| Oakton High School | - | Varsity | - | 0 | | |
| Oakville High School | - | Varsity | Large | 0 | | |
| Oakville High School | - | Varsity | Small | 0 | | |
| Oakville High School | - | Varsity | Small | 0 | | |
| Oakville High School | - | Varsity | - | 0 | | |
| Oakville High School | - | Varsity | Small | 0 | | |
| Oasis High School | - | Varsity | - | 0 | | |
| Obion County Central High School | - | Varsity | Large | 0 | | |
| Obion County Central High School | - | Varsity | - | 0 | | |
| Obion County Central High School | - | Varsity | - | 0 | | |
| Ocean Springs High School | - | Varsity | Large | 0 | | |
| Ocean Springs High School | - | Varsity | Medium | 0 | | |
| Ocean Springs High School | - | Varsity | Large | 0 | | |
| Ocean Springs High School | - | Varsity | - | 0 | | |