 In 1957 the understorey of the early Block C staff room was enclosed to form a health services room.Alterations to the western end of Block D in 1958 included enclosing the northern end of the eastern verandah to form a store room, widening of windows with the addition of casements (northern wall) and double-hung sashes (east and west walls).Two highset timber-framed classroom buildings were also built to the north and west of Block D in the 1950s