The Cathedral High School in Bangalore, Karnataka is a co-educational institution affiliated with the Council for the Indian School Certificate Examinations (CISCE). It is one of the oldest educational institutions in the state, having been established in 1866, and is part of the institutions in the city run by the Church of South India under Karnataka Central Diocese. The school is located on Richmond road in the Central Business District of the city and sits on a 100-acre (400,000 m2) campus, which it shares with CSI-KCD All Saints Church. The campus also houses the Cathedral Pre-University College.