Heolddu Comprehensive School is a school located in the town of Bargoed. It overlooks Bargoed and is set in green surroundings near the Golf Club and the mountain road to Gelligaer. It is one of 14 secondary schools in the Caerphilly Local Authority. Currently there are over 700 pupils on roll, including over 80 pupils in a vibrant 6th form, with 43 teaching staff and 28 support staff. The school is led by headteacher Mr. M. Sims.