Oh but didnt you read; little Nanthaniel was only trying to scare his teacher and "never intended to pull the trigger". Its just a typical example of the crazy high jinx that prepubescent teenagers partake in. He sounds like a thoroughly adorable little bugger.:)
"Beer is proof that God loves us and wants us to be happy" Benjamin Franklin
Yes guns are designed to release a projectile at high speed. That is what guns a designed to do. That is what that gun did. Cars are designed to drive on a road. You should not sue Toyota if you get run over by a drunk driver.
I've always felt that these incidents reeked of the plot of "A Few Good Men". Soldiers are trained follow orders. Even if she knew it to be wrong, you don't disobey an order. If heads roll, they need to be heads at the top, not the bottom.