As it goes, I had a word with our dev team and we'll be able to selectively block bits by the adult flag in the version 6 codebase. How useful this will be remains entirely to be seen, but as it's a side-effect of another feature it is no bother

@Ravening_wolf: I quite agree - my dad's just retired after a long stint in front of the blackboard (Geography) and he's never even used his school lappy (despite having two very IT literate sons!) - a great advocate of more practical learning!