| Armour School District, SD (District) |
| Armstrong County, TX (ISD) |
| Armstrong County, PA (ISD) |
| Armstrong SD, PA (District) |
| Armstrong Twp HSD 225, IL (District) |
| Armstrong-Ellis Cons SD 61, IL (District) |
| Arnett, OK (District) |
| Arnold Public Schools, NE (District) |
| Arock Sd 81, OR (District) |
| Aromas - San Juan Unified, CA (District) |
| Aroostook County, ME (ISD) |
| Arp ISD, TX (District) |
| Arriba-Flagler C-20, CO (District) |
| Arrow Academy, TX (PSA) |
| Arrowhead Elem, MT (District) |
