The subject comes up in places distant from BC. Considering the upcoming election year, here in Portland we usually have a few "fringe" candidates for local office asserting WiFi in public schools is "damaging" children, causing them to misbehave, etc.
Obviously most of the population is unconcerned about such risk. I suppose if it turned out that wireless signals really do cause some obscure deleterious effects, the "tinfoil hat" crowd will say they told us so. I'd go with the odds that's even less likely than winning the Megabucks lottery 3 times in a row.