| Abbreviation | Definition |
|---|---|
| CAATS | Combat Army Aviation Training School |
| CABAS | Comprehensive Application of Behavior Analysis to Schooling |
| CABBS | Central Arkansas Bail Bond School |
| CACS | Chippewa Area Catholic Schools |
| CACS | Creative Arts Charter School |
| CACTUS | Comprehensive Administration of Credentials for Teachers in Utah Schools |
| CADS | Childrens All Day School |
| CAES | Chester Andover Elementary School |
| CAFS | Cleaner Air For Schools |
| CAGS | Cobram Anglican Grammar School |
| CAHS | Chinese American Heritage School |
| CAHS | Columbus Alternative High School |
| CAIRS | Centre for Adults In Residential Schools |
| CAIS | California Association of Independent Schools |
| CAIS | Canadian Accredited Independent Schools |
| CAIS | Canadian Association of Independent Schools |
| CAIS | Changchun American International School |
| CAIS | Chinese American International School |
| CAIS | Connecticut Association of Independent Schools |
| CAIT | Croom's Academy of Information Technology |