| Ambassador Academy, AZ (District) |
| Ambassadors Preparatory Academy, TX (PSA) |
| Amber Cs Inwood, NY (PSA) |
| AMBER CHARTER SCHOOL EAST HARLEM, NY (PSA) |
| AMBER CHARTER SCHOOL KINGSBRIDGE, NY (PSA) |
| Amber-Pocasset, OK (District) |
| Amboy CUSD 272, IL (District) |
| Ambridge Area SD, PA (District) |
| Amelia, VA (District) |
| American Academy of Innovation, UT (PSA) |
| American Basic Schools Llc, AZ (District) |
| American Charter Schools Foundation D.B.A. Alta Vista High S, AZ (PSA) |
| American Charter Schools Foundation D.B.A. Apache Trail High, AZ (PSA) |
| American Charter Schools Foundation D.B.A. Crestview College, AZ (PSA) |
| American Charter Schools Foundation D.B.A. Desert Hills High, AZ (PSA) |
