Complex sentence: Gipson was appointed Headmaster of Melbourne independent school, St Michael's Grammar School, In 2000 he succeeded the previous Headmaster Tony Hewison, who had been head there for 20 years.
Split into simpler sentences: Gipson was appointed Headmaster of Melbourne independent school, St Michael's Grammar School, in 2000. He succeeded previous Headmaster Tony Hewison, who had been head there for 20 years.