He was also the General Secretary of the National Union of Students in 1989 .
He is the son of Donald Marles , a former headmaster of Trinity Grammar School , and Fay Marles , Victoria 's first Equal Opportunity Commissioner and later Chancellor of the University of Melbourne .
son was also the son   of the National Union of Students in 1989 .
He is the son of Donald Marles , a former headmaster of Trinity Grammar School , and Fay Marles , Victoria 's first Equal Opportunity Commissioner and later Chancellor of the University of Melbourne .