 The Ridge St campus would educate the primary students with the Mount St campus becoming the senior campus for pupils from Ridge Street, Naremburn and Lavendar Bay.At the end of 1955, the Sister's of St Joseph vacated the school and transferred to Lavendar Bay with the Sisters of Mercy taking over and renaming the school St Mary's.In 1956 St Mary's became solely a primary school, education boys and girls from Kindergarten to Year 4.