Following reorganisation of secondary education by Waltham Forest council (devised by a Labour council but instituted under a Conservative one), during the years 1968 - 72 it gradually became a comprehensive Senior High School for boys aged 14–18 admitting most of its pupils from the Junior High Schools Chapel End, William Fitt, Warwick Boys School and Aveling Park. The last entry of boys to the main Monoux building was in 1987 who were taught separately to the sixth form but within the same building in Chingford Road. The last entry of boys however was in 1988 who were not taught in the main building but in an "annexe" located in Brookscroft Rd in the old Chapel End Junior High School. This was closed in 1990.