Complex sentence: Old Ignatians, St Patricks, Barker Old Boys, Knox Old Boys, Waverley, Kings Old Boys and Oakhill are or were based on ex-students of schools and the Bronte and Manly Savers clubs are composed of members of surf lifesaving clubs.
Split into simpler sentences: Old Ignatians, St Patricks, Barker Old Boys, Knox Old Boys, Waverley, Kings Old Boys, and Oakhill are or were based on ex-students of schools. The Bronte and Manly Savers clubs are composed of members of surf lifesaving clubs.