In 1938 (which was the golden jubilee of the sisters' arrival in Fiji) the sisters opened a secondary department on the third floor of St Anne's Primary School – it was called St Philomena's.

There was also a small secondary branch attached to St Joseph's Primary School which was on the site where the Reserve Bank is now, next to the Sacred Heart Cathedral.

The school has produced athletes who have represented Fiji in international competitions.

St Joseph's is known for the many sporting titles they have achieved, especially advancing to the finals of the majority of Fiji Secondary Schools netball and hockey tournaments.

St Joseph's stages an annual concert featuring music from all ethnicities represented in the student body.