I respectfully disagree with the statement that 'arming teachers is not a good idea....'. I actually believe that arming the teachers who are 1) willing & 2) capable to complete and PASS a high-level series of courses designed for school type building and grounds scenarios will be the single most effective way to ADD safety and SAVE LIVES that we can do.
Nut jobs will always be out there. The price of FREEDOM is eternal vigilance; meaning we have to be aware of what's going on around us, physically, environmentally, emotionally, and politically.
In virtually every one of these mass killings, the bad guy either stops, or takes their own life as soon as they meet resistance. So.... offer resistance ASAP, and as so many have turned into a quick sound byte: when seconds count, even the best cops are minutes away. Which is the very reason why so many folks choose to take primary responsibility for their own safety, and the safety of their families, by carrying their own firearm with them. How many times must it be proven that the fastest, most effective way to stop a bad guy with a gun, is a good guy with a gun?
Now, let's address for a moment the 'School Resource Officer position'. In my observations, what Rule3 posted above is exactly true. They are predominantly LEOs who are looking for a cake assignment, and are nearing retirement. Most LEOs never get significant training how to operate under severe stress. So, you're relying on a group of good folks, who 1) never got the training to begin with, and 2) are now almost retired, so they are even further removed from maintaining whatever skillset they did have.
I'm sorry, but arguments against allowing teachers to be armed have too many holes in them. And we're not even talking about a teacher or school employee being denied the opportunity to protect THEMSELVES, due to the common 'gun-free-zone' that most schools declare. That's a lot of citizens being denied the God-given right to protect themselves. Especially when you enact policies that create 'Gun Free Zones' (AKA target practice zones for bad guys)
PE