Very common in American schools. Starting from Kindergarten kids learn to blockade the door with desks, hide in a corner of the room which can't be seen from the window, and take scissors as self-defense tools.
Honestly they only started when I was in middle school in the early 2010’s for me
I'm curious how effective those bullet blankets are. They seem to small to fully protect the child.
It seems like a "joke" (a sick one, but one not meant to be taken 100% literally) image. There is absolutely no way anyone would truly think that is useful. Even if it was super thick and effective, it doesn't even cover a whole child. It can also just be kicked aside. There's no way this isn't meant as an exaggerated image just meant to bring attention to a real situation.
But the high quality of American education more than makes up for it
That's right, US kids are way better educated on how to deal with a random shooting than kids in China. Not even close.
"It's our Old West frontier heritage, you commies wouldn't understand" -- distallation of actual arguments I've heard from US conservatives