Also based on both guns who's to say that the teacher would even be able to fire off those shots before the AR-15 (45 rounds per min)?
They're both semi-autos, they have the same firing rate you ignorant dipshit!!
Not to mention you're asking a teacher, not a police officer nor a military professional to handle it. Who's to say they'll pull the trigger or hit the target?
And yes I know Trump said something along the lines of giving the teachers some level of training but that's simply a profession that's not used to handling firearms.
So you're saying it's impossible for teachers to be former military or police??
What if that teacher is a competition pistol shooter as a hobby??
The high school I went to had an indoor shooting range with teachers who were NRA trained marksmanship instructors.