| Arp ISD, TX (District) |
| Arriba-Flagler C-20, CO (District) |
| Arrow Academy, TX (PSA) |
| Arrowhead Elem, MT (District) |
| Arrowhead Uhs School District, WI (District) |
| Art and Science Academy, MN (PSA) |
| Artech Industrial Charter School, ID (PSA) |
| Artesia Public Schools, NM (District) |
| Artesian/Letcher School District, SD (District) |
| Arthur County, NE (ISD) |
| Arthur County Schools, NE (District) |
| Arthur CUSD 305, IL (District) |
| Arthur R. Gould Sch--Lcydc, ME (District) |
| Arts & College Preparatory Academy, OH (PSA) |
| Arts Academy CS, PA (PSA) |
