| Abbreviation | Definition |
|---|---|
| AAW | Arts Academy in the Woods |
| ABBS | Acharya Bangalore B School |
| ABBS | Acharya Bangalore Business School |
| ABC | Anti-social Behavior Contract |
| ABCS | Alternative Break Citizenship Schools |
| ABGS | Aberdare Boys' Grammar School |
| ABGS | Aditya Birla Group School |
| ABHS | Amy Biehl High School |
| ABHS | Anchor Bay High School |
| ABHS | Asquith Boys High School |
| ABLE | Adult Basic and Literacy Education |
| ABMS | Aubry Bend Middle School |
| ABPS | Aditya Birla Public School |
| ABRHS | Acton-Boxborough Regional High School |
| ABRS | Association of British Riding Schools |
| ABRS | Authority of British Riding Schools |
| ABS | American Business School |
| ABSA | Atlanta Business School Alliance |
| ABSI | American Boarding Schools International |
| ABSNT | Absent |