High school gardens - do you teach permaculture at high school?

A teacher trainer recently pointed out to me, that there is a lot of good stuff out there on school gardens, but that was almost entirely for primary and preschool.
Plus, as an outdoor educator, he thought it a pity that the teaching in the school garden was so science biased, observe with a clipboard in hand, or watch me and do as I do.

It left me thinking that the integrative approach of permaculture would be great for high school students.

So, are you aware of any resources particularly for youth 12+ or high school? Experiences?

I've found a charity starting school allotments at secondary schools in England:
http://www.thepapillonproject.com/about-the-project/