Nuclear Proliferation

With the nuclear campaign groups trying to convince the government to develop "small" nuclear devices, to scare rogue states from developing their own. I got to thinking, why don't we do the same with kids at school? Instead of stopping them from taking knives or weapons, we should provide the responsible ones with small kinves, which will be a deterrent to those naughty ones from bringing in their own knives. Only problem I can forsee is how to decide which ones are the responsible. Perhaps they could nominate themselves?