| Snowflake Unified District, AZ (District) |
| Snowline Joint Unified, CA (District) |
| Snyder, OK (District) |
| Snyder County, PA (ISD) |
| Snyder ISD, TX (District) |
| So Central Ne Unified System 5, NE (District) |
| So Sioux City Community Schs, NE (District) |
| So. Conway Co. School District, AR (District) |
| So. Miss. County School Dist., AR (District) |
| Soap Lake School District, WA (District) |
| SOAR Academy Charter District, WA (District) |
| Soaring Heights, NJ (District) |
| Sobriety High, MN (District) |
| Social Circle City, GA (District) |
| Socorro Consolidated Schools, NM (District) |
