Charles Archibald Hoadley was the school's principal from its founding until his death in 1947. Under Hoadley's leadership, the school expanded and began offering trade certificate courses, diplomas in architecture, building, and contracting, as well as evening classes. War and the Depression saw a dip in student numbers. However, by 1943, there were 2500 students enrolled in courses taught at the Footscray Park and Footscray Nicholson campuses.
