Complex sentence: The handball courts and the ground floor class rooms of the other site were incorporated into the St Augustine's Primary School which had continued its operation on an adjoining site while the upstairs classrooms were incorporated into Mount St Joseph's campus.
Split into simpler sentences: The handball courts and the ground floor class rooms of the other site were incorporated into the St Augustine's Primary School which had continued its operation on an adjoining site. The upstairs classrooms were incorporated into Mount St Joseph's campus.