Under the mastership of Kennard Davis, the period of the war was marked by an increase in the school's numbers, caused in part by the relative safety of the city of Oxford, while the Officers' Training Corps, precursor to the present-day Combined Cadet Force, "played its part in the defence of Oxford against possible enemy parachutists and fifth-columnists, guarding the river banks at night with fixed bayonets!". By 1949, the school had about 400 pupils. At the end of the war, the Education Act 1944 saw the school opt to become a Direct grant grammar school, continuing its long-standing tradition of open education.