Schools
All schools
Only schools that competed in 2026-27
| School Name | State | Teams |
|---|---|---|
| O'Neal | NC | 1 |
| O-Block's Finest | Unknown | 1 |
| Oak Grove | MO | 1 |
| Oak Park | MO | 2 |
| Oak Valley Middle | CA | 2 |
| Oakland | CA | 1 |
| Oakville | MO | 3 |
| Oakwood | OH | 1 |
| Oakwood Junior High and High School | OH | 1 |
| Ocean Grove | Unknown | 1 |
| Ocean Grove Charter School | CA | 1 |
| Odle Middle | Unknown | 2 |
| Okemos | Unknown | 3 |
| Oklahoma School of Science & Math | OK | 1 |
| Olentangy Berlin | OH | 3 |
| Olentangy Liberty | OH | 2 |
| Oliver M. Hazen High School | WA | 1 |
| Olympian | CA | 2 |
| Onalaska | WI | 1 |
| Orange County | VA | 3 |