| Sonoma County ROP, CA (District) |
| Sonoma ESA, CA (ISD) |
| Sonoma Valley Unified, CA (District) |
| Sonora Elementary, CA (District) |
| Sonora ISD, TX (District) |
| Sonora Union High, CA (District) |
| Sonoran Desert School, AZ (District) |
| Sonoran Science Academy - Broadway, AZ (District) |
| Sonoran Science Academy - Davis Monthan, AZ (District) |
| Sonoran Science Academy - Phoenix Metro, AZ (District) |
| Soper, OK (District) |
| Soquel Union Elementary, CA (District) |
| Souderton Area SD, PA (District) |
| Souderton Cs Collaborative, PA (PSA) |
| Souhegan Cooperative School District, NH (District) |
