Hey.. up in QLD it is policy. I've just done a google search on the NSW DET, and it appears that the "Fresh Tastes NSW Healthy School Canteen Strategy" is "the policy sets out requirements associated with a government-endorsed approach that assists schools to determine nutritional and healthier types of foods for sale in their canteens."

So it is policy as per the department of ed.

It states that this policy is applicable to "All DET staff and operations; Schools; TAFE; Parents/Guardians/Caregivers; The Public; Associated with Industry"

Go to..

https://www.det.nsw.edu.au/policies/...being%7CHealth

the stuck up b@t$h#s have to follow it!!