When my son’s primary school offered a “drug education” course, he thought it was hilarious. He jokingly imagined a class where he would be taught the finer points of buying and using drugs. For advanced students, workshops on distribution and smuggling. Although he joked about it, my son is terrified of illegal drugs and insists he’ll never use them. Like most kids his age, when he thinks of drug users he imagines scary men with few teeth, lurking in dark alleys.