Shortly after Ellis' retirement the position of headmaster was taken over by George Weeks. However he too resigned that year and another new headmaster was needed. The position was awarded to William Falcon in 1906. Under his headmastership Hilton College grew from 50 pupils to over 200. Many buildings were completed such as the William Campbell building and the school chapel. The original school buildings, which were red brick, were changed to the present Cape Dutch style. The present school uniform was introduced along with the house system (the first three houses being Newnham, Ellis and Weeks (later renamed Pearce). Falcon also lead reforms in the school's academic curriculum and, foreseeing the inevitable union of the South African colonies, replaced French with Dutch as the official second language in 1907.