Meanwhile, although most of the day students remained at CBC Perth, numbers were depleted and the college immediately accepted an overflow of students from St Patrick's Boys School on Wellington Street. CBC Perth continued as a day school from 1938–1961.
At the same time, despite many day students remaining at CBC Perth, enrollment declined, prompting the college to quickly accept additional pupils from a nearby school, which ultimately led to CBC Perth continuing its role as a day school from 1938 to 1961.