| Asotin-Anatone School District, WA (District) |
| Aspen 1, CO (District) |
| Aspen Academy, MN (District) |
| Aspermont ISD, TX (District) |
| Aspira Bilingual Cyber Charter School, PA (PSA) |
| Aspire Academy Charter School, MN (PSA) |
| Aspire Charter Academy, IN (District) |
| Assabet Valley Regional Vocational Technical, MA (District) |
| Assumption Parish, LA (District) |
| Assumption Parish, LA (ISD) |
| Astoria CUSD 1, IL (District) |
| Astoria Sd 1, OR (District) |
| Asu Area Center, AR (District) |
| Atascadero Unified, CA (District) |
| Atascosa County, TX (ISD) |
