| Abbreviation | Definition |
|---|---|
| BALTO | Bringing A Light To Others |
| BAMS | Bel Air Middle School |
| BAMS | Bellefonte Area Middle School |
| BAMS | Berkley Accelerated Middle School |
| BAMS | Bernice Ayer Middle School |
| BAMS | Brattleboro Area Middle School |
| BAPS | Broken Arrow Public Schools |
| BAS | Bouwlust After School |
| BAS | Brighton Area Schools |
| BASA | Before And After School Adventures |
| BASAS | Boston Association of School Administrators and Supervisors |
| BASB | Boston After School Beyond |
| BASC | Before and After School Care |
| BASC | Biochemistry Across the School Curriculum |
| BASD | Beaver Area School District |
| BASD | Bellefonte Area School District |
| BASD | Bethlehem Area School District |
| BASD | Bloomsburg Area School District |
| BASD | Boyertown Area School District |
| BASD | Brookville Area School District |