Arming teachers to stop school shootings is a dangerous myth

After last week’s school shooting in Parkland, Florida, Americans are imploring their leaders to take serious action on gun control. During a town hall Wednesday night, for instance, survivors of the shooting suggested plenty of steps that could be taken, from banning bump stocks to limiting magazine capacity, strengthening background checks, and  easing the NRA’s stranglehold on politicians.

President Donald Trump, however, decided instead to return to a debunked right-...