A teaching staff of nine, including the principal, welcomed the school's first 322 students in 1960. By 1964, with the addition of seven classrooms and a gymnasium, the school building doubled in size and by 1970 enrollment had reached an all-time high of 742 students. A showcase library was completed in 1974. This school is one of three elementary schools and one secondary school within parish boundaries. It serves those families living in an area of central Etobicoke immediately south of Hwy. #401 and east of Hwy. # 427.
Visitors will notice a large mural upon entering the school. It was the work of students and the artist Stuart Thompson and was completed in 1977. It depicts the figures of Saints Peter, James and John and various symbols of church and community. The large figures are those of Moses and Elijah talking to Jesus, whose face changed and clothes shone brightly (Luke 9).
From 1984 to 1986, the school became the temporary site of the new Catholic high school, Don Bosco. Transfiguration Catholic School students attended classes at a nearby vacant public school. Once the new Don Bosco high school opened the Transfiguration students returned to the present site and has become a vibrant community to serve a diverse community.