Schools
C
| Name | Category | Notes |
|---|---|---|
| Cardiff High | Grammar | |
| Cardiff High School | Grammar | |
| Cardiff Royal Infirmary, Sch of Radiography | Miscellaneous | |
| Cardinal Heenan RC High School, Leeds | Comprehensive | |
| Cardinal Vaughan Memorial School, Holland Park | Grammar school | |
| Carlisle Grammar School | Grammar | |
| Carlow College | Miscellaneous | |
| Carlow Lay College | Miscellaneous | |
| Carluke High School | Comprehensive | |
| Carmarthen GS | Grammar | |
| Carmelite Monastery, Clondalkin, County Dublin | Other Private | |
| Carnegie College, Leeds | Miscellaneous | |
| Carnoustie High School, Angus | Comprehensive | |
| Carrick Academy | Comprehensive | |
| Castle Donington High School | Comprehensive | |
| Castle Knock College, Dublin | Other Private | |
| Castlenock College | Miscellaneous | |
| Castle Park, Dalkey | Other Private | |
| Castlereagh College of Further Education | FE College | |
| Caterham School | Public School |