| CollinsRhodes Elementary School | 537 | regular | other |
| CollinsRiverside Middle School | 318 | regular | elementary |
| COLLINSVILLE EC CTR | 372 | regular | other |
| COLLINSVILLE EL | 302 | regular | other |
| COLLINSVILLE H S | 298 | regular | other |
| Collinsville High School | 906 | regular | other |
| Collinsville High School | 1,956 | regular | high |
| COLLINSVILLE HS | 919 | regular | high |
| Collinsville Middle School | 894 | regular | middle |
| COLLINSVILLE MS | 478 | regular | middle |
| COLLINSVILLE UPPER ES | 697 | regular | elementary |
| Collinswood Language Academy | 893 | regular | elementary |
| Collinwood Elementary | 349 | regular | other |
| Collinwood High School | 228 | regular | other |
| Collinwood High School | 223 | regular | high |
| Collinwood Middle School | 238 | regular | elementary |
| COLLISTER ELEMENTARY SCHOOL | 262 | regular | other |
| Colman Elementary - 03 | 193 | regular | other |
| Colman-Egan High School - 01 | 100 | regular | high |
| Colman-Egan Jr. High - 02 | 36 | regular | middle |
| COLMESNEIL EL | 220 | regular | other |
| COLMESNEIL JH/HS | 194 | regular | other |
| Colo-NESCO Middle/High School | 216 | regular | other |
| Colo-Nesco Elementary School | 169 | regular | other |
| COLOGNE ACADEMY | 679 | regular | elementary |
| Cologne Academy Online | 22 | regular | elementary |
| Coloma Elementary | 100 | regular | other |
| Coloma Elementary School | 356 | regular | other |
| Coloma High School | 336 | regular | high |
| Coloma Intermediate School | 175 | regular | elementary |
| Coloma Junior High School | 228 | regular | middle |
| Colome Elementary - 02 | 65 | regular | other |
| Colome High School - 01 | 38 | regular | high |
| Colome Middle School - 03 | 32 | regular | middle |
| Colon Elementary School | 223 | regular | elementary |
| Colon High School | 271 | regular | other |
| Colona Grade School | 371 | regular | other |
| Colonel Academy | 172 | alternative | other |
| Colonel Donald McMonagle Elementary School | 304 | regular | other |
| COLONEL FRED CHERRY MIDDLE | 736 | regular | middle |
| Colonel George Iles Elem Sch | 535 | regular | elementary |
| Colonel Howard Nichols Elementary | 960 | regular | elementary |
| Colonel John Siegfried El Sch | 808 | regular | elementary |
| Colonel John Wheeler Middle School | 1,061 | regular | middle |
| Colonel Johnston Elementary School | 270 | regular | other |
| Colonel Joseph C. Rodriguez PREP Academy | 640 | regular | middle |
| COLONEL MIGUEL MENCHACA EARLY CHILDHOOD CENTER | 809 | regular | other |
| Colonel Mitchell Paige Middle | 439 | regular | middle |
| Colonel Richardson High School | 528 | regular | high |
| Colonel Richardson Middle School | 390 | regular | middle |