Sad to think so many people in the U.S. think their shooting hobby is more important than other people's lives. P.S.: Hope she's a maths teacher, since she doesn't know how to spell "barricade".

Valid and helpful information. But so, so sad that this needs to be taught. Less access to firearms would change the 'likely' to 'unlikely event' at the beginning of this post.

Its unbeliable that USA did not restrict yet the access to guns... They have so many deads that they could avoid, so much violence... Here in Europe you barely ever hear about somebody geting shot...

Oh god, that's terrible. Instead of fight the shooting issue, people in the US just adapted into the idea to be shot on public ... I always wanted to visit US, because of the beautiful national parks, but I'm very scared of what is considered as normal there.

Thank you for sharing. It's pretty damn horrifying that teachers need to be trained and prepared for a likely active shooter situation.

All around the world schoolchildren learn things like grammar, mathematics and geography. In the US they learn how to survive a school shooting. And the NRA keeps yelling: "Guns don't kill people.'" No, but people with guns kill people. And you can't deny that.

At 12 years old, should I really have to worry about whether I'll make it home alive? Should I really have to worry about what the best strategy to barricade my classroom door or survive a gunshot is? Should I have to panic when I hear the fire alarm go off, unsure whether to stay inside and possibly get burned alive or go outside and maybe get shot? I shouldn't, but I do. So ask you gun supporters out there: Is this what you want? You say that you need a gun to protect yourself, but what are you protecting yourself from? Guns? An eye for an eye makes the whole world blind. Trying to stop violence with violence only leads to more. Now, I'm not saying we should ban guns. I'm saying that it shouldn't be this easy to get a gun. As an middle-schooler, you may not listen to my opinion because I'm a kid, but I think the voices of America's children matter, because this issue is REAL and it's affecting us too!

I've seen interviews with gun enthusiasts who had no idea what the gun control measures Obama wanted were. After they found out, they agreed. Maybe someone should go to their meetings and explain, not just call them idiots, rednecks and other things.

What scares me the most is this epidemic is still building. I have a number of years left before I'm out of school and this just gave me a whole lot of anxiety. There was a lockdown in December because of a shooting that happened street away. This is why I bring pepper spray either me

What "we" (read: you, US citizens) need to do to stay alive is getting decent gun laws. Easy as that.

But if you do active shooter drills, wouldn't that be a benefit for the shooter if they are a student?

I wanted to cry as I read this but I am glad I read it. Thank you for posting.

To help reiterate the usefulness of the information – my friend is an RA at my college and they just went through active shooter training. She learned all of the same information from campus police. Please remember this info and be safe.

...Still, prevention is better than cure.

Wow. I'm an aussie girl and I've never had to even think about this. I'll be looking back on this because just because I'm in Australia, it still could happen. Thank you for sharing this information and hope all who ever is caught in this situation is ok in the end.

In my school, we are encouraged to just throw things at them and hide in a closet, but we're not allowed to use the school iPads to save ourselves, the new teachers (ex. The new German teacher), that were hired mid-year weren't told anything about safety drills. There recently was a safety drill triggered accidentally, and this is such a common occurrence that we're used to it, once it happened in German class and we had to explain to the new teacher what we were supposed to do (what the school told us to do), and then what the old German teacher (who moved across the country) told us to do, she told us to throw the iPads, to flip over desks near the door so that they couldn't manuver around the room, to break the (poorly made) windows (they only open a few inches, we're on the first floor) to use metal water bottles as a weapon, to use the doors that we're not supposed to used.

I've been out of school for over ten years now and they were just starting these sort of drills when I was there. We would have all been dead. It was always 'everyone get under your desks and be quiet.' No escape plans, no barricades. Glad they've adjusted to a more proper and safe way of doing these drills. It's incredibly sad we need them in the first place.

This is f*cking sad and ridicilous. America, the land of the free, so afraid.... And all because of the stupidity of this government and NRA. you're free to be afraid. Just so sorry for all he kids and teachers who died.

My heart beats faster as I read this article. Scared.

Better still..... emigrate to Australia.

Ok, so if the potential killer has read this, then have a few more strategies to avoid....hopefully more strategies will be posted to confuse or defeat the potential killer before they consider any future actions. Once they know people are empowered for action they may think twice before doing anything.

I'm sorry but this whole thing is a bit stupid to me. School shooters are not stupid, they're mentally unbalanced/insane etc. All this will mean is that the teachers will be shot first, and then the shooter will have another gun....

Incredible information, this should be mandatory, to be taught for all teachers !!!

If you are in a science lab, fire extinguishers are an amazing defensive weapon. Unless a shooter is in a full gas mask, a shot to the face with a fire extinguisher will incapacitate them almost immediately. While they are incapacitated, you have a big, heavy metal cylinder in your hand .. use your imagination. I suggest the gonads, followed by the face.