I know a 22 can kill, but the chances of it are very slim. Even if someone was hit by one the damage would be small. Some deer rifles don't need to kill, they could take a limb easily, and some can do it at long distances. A 22 would loose much of it's punch. You can't use a 30-30 here to hunt squirrels.

Not sure if I'd want public schools to teach firearms use. Good idea. Not sure they are up to it.