| Corydon Intermediate School | Corydon | Public school | 4–6 | 0 |
| Corydon Elementary School | Corydon | Public school | PK–3 | 0 |
| Corydon Central Jr High School | Corydon | Public school | 7–8 | 0 |
| Corydon Central High School | Corydon | Public school | 9–12 | 0 |
| Cortland Elementary School | Seymour | Public school | K–4 | 0 |
| Corpus Christi School | South Bend | Private school | PK–8 | 0 |
| Corpus Christi School | Evansville | Private school | PK–8 | 0 |
| Cornerstone Private School | Wolcott | Private school | PK–12 | 0 |
| Cornerstone Christian School | Albion | Private school | K–12 | 0 |
| Cornerstone Christian Montessori School | Elkhart | Private school | PK | 0 |
| Cornerstone Christian Montessori School | Elkhart | Private school | PK–5 | 0 |
| Cornerstone Christian Academy | Brazil | Private school | PK–5 | 0 |
| Cornerstone Baptist Academy | Indianapolis | Private school | PK–11 | 0 |
| Corner View Parochial School | Nappanee | Private school | 1–8 | 0 |
| Coram Deo Academy | Carmel | Private school | PK–8 | 0 |
| Coquillard Elementary School | South Bend | Public school | PK–4 | 0 |
| Coolspring Elementary School | Michigan City | Public school | K–6 | 0 |
| Cooks Corners Elementary School | Valparaiso | Public school | K–5 | 0 |
| Converse Elementary School | Converse | Public school | PK–2 | 0 |
| Connersville Sr High School | Connersville | Public school | 9–12 | 0 |
| Connersville Middle School | Connersville | Public school | 7–8 | 0 |
| Concordia Lutheran School | Fort Wayne | Private school | PK–8 | 0 |
| Concordia Lutheran High School | Fort Wayne | Private school | 9–12 | 0 |
| Concord West Side Elem School | Elkhart | Public school | K–4 | 0 |
| Concord South Side Elementary Sch | Elkhart | Public school | K–4 | 0 |
| Concord Ox Bow Elementary School | Elkhart | Public school | K–4 | 0 |
| Concord Junior High School | Elkhart | Public school | 7–8 | 0 |
| Concord Intermediate School | Elkhart | Public school | 5–6 | 0 |
| Concord East Side Elementary Sch | Elkhart | Public school | K–4 | 0 |
| Concord Community High School | Elkhart | Public school | 9–12 | 0 |
| Compass Rose Academy | Wabash | Private school | 8–12 | 0 |
| Community Montessori School | Fishers | Private school | PK–6 | 0 |
| Community Montessori | New Albany | Public school | PK–12 | 0 |
| Community Christian School | Connersville | Private school | K–11 | 0 |
| Community Christian School | Richmond | Private school | PK–8 | 0 |
| Community Baptist Christian School | South Bend | Private school | PK–12 | 0 |
| Columbus Signature Academy New Tech High School | Columbus | Public school | 9–12 | 0 |
| Columbus North High School | Columbus | Public school | 9–12 | 0 |
| Columbus East High School | Columbus | Public school | 9–12 | 0 |
| Columbus Christian School | Columbus | Private school | PK–12 | 0 |
| Columbus Area Career Connection | Columbus | Public school | 6–12 | 0 |
| Columbia Elementary School | Logansport | Public school | K–4 | 0 |
| Columbia Elementary School | Rochester | Public school | PK–1 | 0 |
| Columbia City High School | Columbia City | Public school | 9–12 | 0 |
| Colonial Christian School | Indianapolis | Private school | PK–12 | 0 |
| Colonel John Wheeler Middle School | Crown Point | Public school | 6–8 | 0 |
| College Wood Elementary School | Carmel | Public school | PK–5 | 0 |
| College Park Elementary School | Indianapolis | Public school | K–5 | 0 |
| College Corner Union Elem School | College Corner | Public school | K–5 | 0 |
| Cold Spring School | Indianapolis | Public school | K–8 | 0 |