Greystanes High School is a publicly funded comprehensive co-educational secondary school located in Greystanes, a suburb of Sydney, Australia.

Houses and colours The school's student population is organised into four houses for the purposes of sporting competitions, mentoring, roll marking and the like: Bradman – Blue – named for the cricketer, Sir Don Bradman Gilmore – Yellow – named for the writer and activist, Dame Mary Gilmore Monash – Green – named for the engineer and citizen soldier, General Sir John Monash Parkes – Red – named for the Australian statesman, Sir Henry Parkes

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