On entry to the school, every pupil is allocated to one of six houses, corresponding to the six forms of entry. Boys remain in their houses for the duration of their school career. Houses are used as the basis of the pastoral system and for sporting and other competitions. House points may be gained by distinguished work or effort in all aspects of school life.
The present house system dates from 1981. Prior to that, the six houses were named after former eminent schoolmasters, clerics and old boys: Jephson, Kelly, McDowell, Nairne, Whiteley, Wilson. Four new houses were created from the old six shortly after the move to Wallington; a fifth, Southwark, was added in 2002 and the sixth, Datchelor, in 2014, as the school expanded to five and then six forms of entry.