| American Lakes | 625 | regular | elementary |
| American Leadership Academy | 1,597 | regular | other |
| American Leadership Academy - Johnston | 2,082 | regular | other |
| American Leadership Academy Anthem K-6 | 1,079 | regular | other |
| American Leadership Academy Gilbert K-6 | 556 | regular | elementary |
| American Leadership Academy Gilbert North K-12 | 2,357 | regular | other |
| American Leadership Academy Gilbert South K-6 | 396 | regular | elementary |
| American Leadership Academy Ironwood K12 | 2,084 | regular | other |
| American Leadership Academy Mesa K-6 | 403 | regular | elementary |
| American Leadership Academy of Applied Technologies | 628 | regular | other |
| American Leadership Academy Queen Creek K-12 | 2,356 | regular | other |
| American Leadership Academy San Tan Valley K-6 | 637 | regular | elementary |
| American Leadership Academy Signal Butte K-6 | 457 | regular | elementary |
| AMERICAN LEADERSHIP ACADEMY VIRTUAL | 660 | regular | other |
| American Leadership Academy West Foothills K-12 | 2,276 | regular | other |
| American Leadership Academy-Coastal | 1,002 | regular | other |
| American Legion High (Continuation) | 163 | alternative | high |
| American Montessori Academy Elementary | 152 | regular | other |
| American Montessori Academy Upper Elementary | 289 | regular | elementary |
| American Preparatory Academy - Accelerated School | 1,556 | regular | other |
| American Preparatory Academy - Draper #1 | 622 | regular | elementary |
| American Preparatory Academy - Draper #2 | 1,068 | regular | elementary |
| American Preparatory Academy - Draper #3 | 719 | regular | other |
| American Preparatory Academy - Salem | 570 | regular | other |
| American Preparatory Academy - The School for New Americans | 639 | regular | other |
| American Renaissance School | 823 | regular | elementary |
| American River Charter | 263 | regular | other |
| American River Collegiate Academy | 132 | regular | elementary |
| AMERICAN SENIOR HIGH SCHOOL | 1,582 | regular | high |
| AMERICAN SIGN LANGUAGE & ENGLISH SECONDARY SCHOOL | 147 | special-ed | high |
| American Union Elementary | 265 | regular | elementary |
| American Way Middle | 693 | regular | middle |
| Americana Elementary School | 401 | regular | elementary |
| AMERICAS H S | 2,049 | regular | high |
| AmeriSchools Academy - Camelback | 94 | regular | other |
| AmeriSchools Academy - Country Club | 167 | regular | other |
| AmeriSchools Academy - Yuma | 102 | regular | elementary |
| Amerischools Academy North | 193 | regular | elementary |
| AmeriSchools Academy Online Instruction | 26 | regular | other |
| Amerman Elementary School | 504 | regular | elementary |
| Amery High | 418 | regular | high |
| Amery Intermediate | 260 | regular | elementary |
| Amery Middle | 275 | regular | middle |
| Ames Elementary School | 122 | regular | elementary |
| Ames High School | 1,440 | regular | high |
| Ames Middle School | 1,033 | regular | middle |
| AMES VISUAL/PERF. ARTS | 131 | regular | other |
| Amesbury Elementary | 485 | regular | other |
| Amesbury High | 481 | regular | high |
| Amesbury Innovation High School | 50 | regular | high |