Complex sentence: Hardey Preparatory School for Boys is a complementary institution for boys, opened in 1935 and is named for Aloysia Hardey an American born member of the Society of the Sacred Heart.
Split into simpler sentences: Hardey Preparatory School for Boys is a complementary institution for boys, opened in 1935. It is named for Aloysia Hardey, an American-born member of the Society of the Sacred Heart.