| Aprender Tucson, AZ (District) |
| Aptakisic-Tripp CCSD 102, IL (District) |
| Aquilla ISD, TX (District) |
| Ar-We-Va Comm School District, IA (District) |
| Arab City, AL (District) |
| Aransas County, TX (ISD) |
| Aransas County ISD, TX (District) |
| Aransas Pass ISD, TX (District) |
| Arapaho-Butler, OK (District) |
| Arapahoe 1 Englewood, CO (District) |
| Arapahoe 2 Sheridan, CO (District) |
| Arapahoe 5 Cherry Creek, CO (District) |
| Arapahoe 6 Littleton, CO (District) |
| Arapahoe Charter School, NC (District) |
| Arapahoe County, CO (ISD) |
