The original St. John's Hall building as well as Wong Ming Him Hall was deemed inadequate owing to the College's rapid growth, to an extent that AM PM double-shift schooling was adopted in 1961 and 1962. As a result, the College started the planning of a thorough campus redevelopment scheme with alumnus-cum-architect Szeto Wai (司徒惠) in 1962, and construction started in the same year. The old St. John's Hall building was torn down and replaced by four new blocks, namely the North Wing, East Wing and West Wing (now renamed Stewart Building), as well as the now demolished Primary School Block. This layout remained unchanged until the 2000s, when the College carried out a School Improvement programme.