I think this is one of those issues that needs to be addressed in the home.
Yes it does for sure. The problem is, the "home" is no longer a place for real nurture it seems - just another space to sit and be entertained.
We see images of metal detectors at schools - is that common?
We don't have them at our school, but we are a pretty small country district. That being said, we have had one or two instances where a gun was brought to school. The problem with metal detectors is you spend a bunch of money to give a false sense of security. They aren't fool proof. I think in bigger city districts they probably catch a lot of stuff.