Pitching this stuff is hard; kids at different ages see things differently,
and kids in different areas age at different speeds.
I think you've hit one of the main challenge of schools outreach on the
head.
We are starting to have a "recipe" for introducing adult organisations to
Wikipedia which will basically work for charities, universities, museums
and the like - we would need several, for schools.
Plus our adult outreach model is based on people coming to events of their
own free will, not because they've been told to! I imagine that a room full
of schoolkids is a much more difficult audience than what we're used to.
I think this is part of the reason why we're focusing more on universities
and GLAMs at the moment. But clearly schools need to be part of the
long-term plan...
Chris