Sorry, I worded the question poorly.
I am wondering about the textbook they use in public schools, I think it is elementary schools in NSW or Queensland (maybe both).
It teaches academic content with permaculture ethics and applications is my understanding.
A lot of things come out of nowhere, so look everywhere.
I recently heard mention in a podcast (was it a Geoff Lawton interview?) of a permaculture textbook that's widely used in Australian schools. I'm in Australia, and have kids in primary school, and I have no idea what it is or what it's called! In fact, I found this forum thread while searching for it .
I suspect it may be the Stephanie Alexander Kitchen Gardens Program (https://www.kitchengardenfoundation.org.au/). She has been instrumental in helping to set up hundreds of school gardens, and has published an excellent book called Kitchen Garden Cooking With Kids. It ties the garden and kitchen together, explains the seasonality of all the different fruits and vegetables, and is full of really well thought out recipes that primary school kids can make.
Some other resources I came across that you might find interesting: