Are we going to have some sort of souvenir program/menu whatever?
If so, it might have the following quote from the school history:
From by H.M. Storey’s History of North Sydney High School (1912-1962):
"And as the Jubilee celebrations begin the last year in this record of half a century, 1961, will stand comparison with any of its predecessors. It has to be remembered that North Sydney is the only school which has ever scored a century of Leaving Certificate Honours. In 1961 it did this for the fourth year running, and broke all records with the amazing total of one hundred and twenty-one Honours. The school with the next best result had some seventy Honours and the schools in the third and fourth places were in the sixties, so that it is very nearly true to say that N.S.H.S. obtained twice as man), Honours as any other school. Another record was the fourteen Honours in Chemistry, traditionally a great North Sydney subject. The ear 1961 also saw the greatest number of Commonwealth Scholarships ever obtained by one school, eighty-six. The previous record was North Sydney's own seventy-seven in 1958. These are indeed wonderful achievements, and on its record over the last fifteen years North Sydney is certainly the premier academic school in New South Wales and it may well be that if comparative facts were available it would prove to be the best in Australia.

At the 1961 Leaving the boy with the best pass in the State was a Falconian, Hanson Yee, who also took first place in Mathematics 1, and added one more James Aitken Scholarship for General Proficiency to the school's list." (p.39)

The souvenir program/menu might also (if there were space) have the school warcry about which the Storey's History says:

The school does have an official war-cry, which has been shouted and chanted on many a field of sport. One can say that it sounds a great deal better than it reads. The following version was printed in The Falcon in December, 1921.
"Oompah, oompah, yaki yaki oompah,
Bloo-a-murra, bloo-a-murra,
Ego yah, anthro popigi, uonana annagi,
Wogga-wogga, wogga-wogga, yaki yaki yah.
North Sydney, wogga-wogga, whiskers
on his gobba-gobba,
Nagasaki, Yokohama, yah, yah, yah.
Who are, who are, who are we?
We are, we are, North Sydney
Where do we come from? Yah! yah! yahl
North Sydney, North Sydney, hah! hah! . halil
Ginger-beer, ginger-beer, pop, pop, pop, North Sydney, North Sydney, always on top.
Mmmmmmmmmmm - boooooo

[Storey continues: "Since this was printed not very long after the communal authors, whoever they were, had perfected their work it may be taken as the Authorised Version. Its spelling is perhaps unnecessarily phonetic in places. Presumably in the third line the village bards were thinking of the Anthropophagi, with tales of whom Othello was wont to beguile Desdemona ("And of the Cannibals that each other eat, /The Anthropophagi, and men whose heads/Do grow beneath their shoulders"), in graceful allusion to classical and literary studies, while "Nagasaki, Yokohama" gave expression to the commercial side in days when its distinguishing characteristic was the teaching of the Japanese language. And it must surely have been the famous Australian town of Wagga Wagga that inspired the fourth line, though the connection with the school that brought it in has long been forgotten. The part of this cry most likely to arouse memories in Old Boys is the booming "Who are, who are, who are we" that came out so powerfully after the preliminary crisp and staccato introduction. (p.53)"