Each house has associated House Captains (usually one boy and one girl), along with a Head Boy and Head Girl (School Captains) and their Deputies that can be chosen from any house. Prefects are expected to perform various duties such as monitoring hallways etc.
Each house has appointed House Captains (usually comprising one boy and one girl), accompanied by a Head Boy and Head Girl (School Captains) that can be chosen from any house. Prefects are expected to perform duties like supervising common areas, etc.