| Pioneer School District, WA (District) |
| Pioneer Technology & Arts Academy, TX (PSA) |
| Pioneer Technology Center, OK (District) |
| Pioneer Union Elementary, CA (District) |
| Pioneer Union Elementary, CA (District) |
| Pioneer Union Elementary, CA (District) |
| Pioneer Valley, MA (District) |
| Pioneer Valley Chinese Immersion Charter(District), MA (District) |
| Pioneer Valley Performing Arts Charter Public (District), MA (District) |
| Pioneer-Pleasant Vale, OK (District) |
| Piper-Kansas City, KS (District) |
| Pipestone Area School District, MN (District) |
| Pipestone County, MN (ISD) |
| Piqua City School District, OH (District) |
| Piscataquis County, ME (ISD) |
