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- Castle View School
- Chelmer Valley High School
- Chelmsford College
- Chelmsford County High School for Girls (SEL)
- Chigwell School (IND, SEL)
- The Christian School (Takeley) (IND)
- Clacton Coastal Academy
- Clacton County High School
- Colbayns High School
- Colchester Academy
- Colchester County High School for Girls (SEL)
- Colchester High School (IND)
- Colchester Institute
- Colchester Royal Grammar School (SEL)
- Colne Community School
- Cornelius Vermuyden School and Arts College
Read more about this topic: List Of Schools In Essex