| Abbreviation | Definition |
|---|---|
| Alum | Alumnus, Alumni [M.] |
| Alum. | Alumna, Alumnae [F.] |
| AMA | Academy of Model Aeronautics |
| AMCS | Alief Montessori Community School |
| AMHS | Academic Magnet High School |
| AMHS | Arabia Mountain High School |
| AMHS | Archbishop Murphy High School |
| AMHS | Arlington Memorial High School |
| AMHS | Ateneo de Manila High School |
| AMHS | Auburn Mountainview High School |
| AMHS | Avon Middle High School |
| AMI | Association Montessori Internationale |
| AMPS | Albany Montessori Primary School |
| AMRLS | Avon Maitland Remote Learning School |
| AMS | Ad Middle School |
| AMS | Albany Middle School |
| AMS | Alderwood Middle School |
| AMS | Alvarado Middle School |
| AMS | Amherst Middle School |
| AMS | Antigo Middle School |