I'm glad that maybe things in practice are more common sense in Australia than a literal reading would make it seem. In America, it is generally assumed that common sense is now the exception rather than the rule, and that any regulation will be applied in a most extreme manner. Political correctness and a totalitarian mentality called "zero tolerance" have taken over our institutions. Little boys have been expelled from school for drawing pictures of guns or playing cops and robbers (drawing a picture of a gun and drawing a real gun on someone are the same thing, to our "zero tolerance" idiots). Girls have been expelled from school for having ear rings or key chains (ear rings or keys could have pointy things that could be used as weapons). Things have gotten insane. We may not have a nanny state, but we surely have a ninny state.
We are getting some of that problem, and it is of concern.
In particular while I think we have less of the zero tolerance problem in schools than the US seems to, it does happen on occasion - schools are among the most left wing of our institutions, and we do get some very odd decisions out of them. A six year old boy in one state has just recently been suspended for poking a six year old girl on the bottom - he was suspended for sexual harassment.
But generally speaking on the very important issues, things work pretty well the vast majority of the time.