| Abbreviation | Definition |
|---|---|
| CSMP | Comprehensive School Mathematics Project |
| CSMS | Camerado Springs Middle School |
| CSMS | Carl Sandburg Middle School |
| CSMS | Carl Stuart Middle School |
| CSMS | Carolina Springs Middle School |
| CSMS | Cave Spring Middle School |
| CSMS | Central Square Middle School |
| CSMS | Citrus Springs Middle School |
| CSMS | College Station Middle School |
| CSMS | Colonel Smith Middle School |
| CSMS | Crystal Springs Middle School |
| CSN | Cougar School Network |
| CSNC | Charter School of New Castle |
| CSNN | Canadian School of Natural Nutrition |
| CSNO | California School Nurses Organization |
| CSNS | College Street Normal School |
| CSO | Charter Schools Office |
| CSOB | Cork School of Business |
| CSOH | Calvary Schools Of Holland |
| CSOL | Charleston School Of Law |