The stories from you and francopoli are absolutely, utterly fucked.
I don't even know what else to say. It's fucked. As a man aiming to be a teacher, I find the situation appalling and incredibly stupid.
This begs the question, though: why haven't we banned kitchen knives yet? They kill people, don't they? Sharp melee weapons at an arm's length in every house. So easy to just reach out and slash someone you don't like: your neighbour, their dog, their car... Why haven't we banned them? WHY?!
Because it's fucking stupid, that's why. The risks are abysmal compared to proper, appropriate use of sharp tools - or even compared to no use at all. I care about human life and safety as much as the next guy, but at some point, your cost-benefit analysis yields extremely poor results and you have to consider that maybe, the shit you're gonna do for safety's sake will drive people insane for that 0.32% increase that has no real effect on the situation but looks oh so comforting.