This is why Teachers should be allowed to carry guns to school.

I've seen soldiers,police officers, security guards, corrections officers, firearms instructors, regular citizens who carry concealed weapons, people out hinting, people working in pawn shops and gun shops and other people who have guns, in fact, literally, more thanhalf the people in the US who are over 21 have a concealed weapons permit and own at least one gun.
You look around and see people walking down the street, half of them in the US are probably carrying a gun and know how and when to use it. They are also responsible enough and have enough self control to never use it unless someones life was in danger.
Some of those people have mental illness or anger issues. Some are taking medications prescribed by a Doctor or illegal drugs.
The population of China: 1.3 Billion. India: 1.2 Billion. USA: About 330 Million. Out of those countries, the USA has the most guns and gun owners.
My point is: I've seen so many people who carry guns lose their temper while they had a gun with them (including me), but, not once have I ever seen someone pull their gun out or even threaten to do so because they were pissed off! Yes, it could happen,  not very likely, but it's possible. Yes, it would be tragic if a Teacher lost their temper and shot a student, but, it would be worse if someone else walked into a school and shot a bunch of innocent people again. You know, if we don't do something drastic NOW to fix the problem, there is more than a 99.9999% chance that it will happen again! That is a guarantee! It is going to happen again if teachers don't start carrying guns in the US.  Teachers carry guns in some other countries and they almost never have any mass school shootings.
It will take the police at least  about 10 minutes to get even one or two officers to the school to respond to an incident like this. More than likely, they would send the SWAT team, not just regular officers, that takes even longer! But, Teachers with guns and the proper training are already there. They would call the police, but, the Teachers don't have to wait 10 minutes or, more than likely, longer, for the police to show up, because they can respond instantly! In those 10 minutes- minimum- that you have to wait for police, that psycho, gunman or woman, could potentially shoot and kill over 100 students and employees at the school! One of them might be your kid or you if you work in the school!
Why is everybody so scared of the 1% chance that an armed Teacher might shoot a student, but, they're not worried that somebody working elsewhere could go to work and kill grown adults (and kids) where they work, shoot people while walking down the street, at the post office, get on the roof of their house and shoot random cars that drive by, have a shoot out with a rival gang or get caught in the cross fire. All of the above have happened and will happen again! But, nobody ever says anything about any of that! Your kids or you are 1 Million times more likely to be shot in one of those situations than by an armed Teacher with a gun who is trying to protect your child's life.
99% of people who carry guns in the United States and other countries know right from wrong. We all realize that if you shoot somebody, you will go to jail. In some cases, you could get the death penalty. Nobody wants that, so nobody shoots anybody else, unless they are psychotic or if it is self defense.
Even if you shoot somebody in self defense and that person was breaking into your house at the time or if it was clearly an accident, more than likely, in most situations, YOU WILL BE ARRESTED! They can hold you in jail for a few days, with no warrant or anything else. It's legal and you should expect cor the police to arrest you after you shoot somebody in self defense. They can hold you in jail, in FL, for up to 3 days, while they do their investigation. After that, they have to either release you or take you to see the judge. Then the Judge will decide what to do with you next.
Why are people so worried about Teachers carrying guns to school to protect their kids, but, they're not worried about anybody else carrying guns? They're afraid of situations that are possible, but not going to happen!  There is a much greater chance of a psycho breaking into the school harming your kid, someone shooting you at work, wherever you work or you getting injured or killed almost any other time or place than a kid getting shot during school by an armed Teacher who is trying to protect your children in school!
Teachers wouldn't be working in school if they didn't love and care about kids and they also understand them and how children act. They are not likely to harm kids.
Pencils and school books can be used as weapons, but, how often do you hear about Teachers or anybody killing kids with a pencil?
People are much less likely to attack another person or place if they know the other person has a gun or there's a gun or person with a gun inside the building.