| Arthur Stanlick Elementary School | 388 | regular | elementary |
| Arthur Street El Sch | 431 | regular | elementary |
| Arthur T. Cummings Elementary School | 467 | regular | elementary |
| Arthur W Coolidge Middle | 405 | regular | middle |
| Arthur W Edwards Elementary | 489 | regular | elementary |
| Arthur Williams Middle School | 626 | regular | middle |
| Arthur-Lovington-Atwood-Hammond | 310 | regular | high |
| ARTIE L HENRY MIDDLE | 1,347 | regular | middle |
| Artman El Sch | 596 | regular | elementary |
| Artondale Elementary School | 413 | regular | other |
| ARTS ACADEMY AT BELLA VISTA | 444 | regular | other |
| Arts Academy at Benjamin Rush | 599 | regular | high |
| Arts Academy CS | 296 | regular | elementary |
| Arts Academy Elementary CS | 425 | regular | elementary |
| Arts Academy in the Woods | 327 | regular | other |
| Arts Academy of New Hampshire Chartered Public High School | 106 | regular | high |
| Arts and Communication Magnet Academy | 690 | regular | other |
| Arts and Technology Academy of Pontiac | 850 | regular | other |
| Arts at the Capitol Theater Magnet School (ACT) | 123 | regular | high |
| Arts High School | 611 | regular | high |
| Arts Impact Middle School (Aims) | 507 | regular | middle |
| Arts In Action Community Charter | 404 | regular | elementary |
| Arts in Action Community Middle | 258 | regular | middle |
| ArtSpace Charter School | 402 | regular | elementary |
| ARTURO A SCHOMBURG SATELLITE ACADEMY BRONX | 259 | regular | high |
| ARTURO SALAZAR EL | 424 | regular | other |
| Arturo Sanchez Elementary | 239 | regular | elementary |
| Artz Fox Elementary | 375 | regular | elementary |
| Arundel Elementary | 388 | regular | elementary |
| Arundel Elementary | 434 | regular | other |
| Arundel High | 1,778 | regular | high |
| Arundel Middle | 1,312 | regular | middle |
| Arvada High School | 754 | regular | high |
| Arvada K-8 | 554 | regular | elementary |
| Arvada West High School | 1,923 | regular | high |
| ARVIDA MIDDLE SCHOOL | 989 | regular | middle |
| Arvin High | 2,653 | regular | high |
| Asa C Adams School | 336 | regular | other |
| ASA Charter | 334 | regular | other |
| Asa Clark Middle | 623 | regular | middle |
| ASA E LOW JR INT | 719 | regular | elementary |
| Asa Hilliard Elementary School | 474 | regular | other |
| Asa Messer El. School | 557 | regular | other |
| Asa Packer El Sch | 314 | regular | elementary |
| Asante Preparatory Academy | 876 | regular | other |
| Asawa (Ruth) SF Sch of the Arts A Public School | 680 | alternative | high |
| ASB INNOVATION ACADEMY | 265 | regular | elementary |
| ASBELL ELEMENTARY SCHOOL | 319 | regular | other |
| Asbury El Sch | 572 | regular | other |
| Asbury Elementary School | 729 | regular | other |
