From the Maitland Mercury report:
A special reunion has been organised over the weekend of September 9 and 10 for Maitland Girls High students who commenced their secondary education in 1962.
The students started high school under the Wyndham Scheme in 1962 and took part in the first HSC (Higher School Certificate) in 1967. All girls are invited regardless of sitting the HSC or not.
Full article available at Maitland Mercury, 22 Aug 2017.