What about parents that don't understand anything about the internet, the ones that call tech support because they didn't know you had to plug the modem in.
Internet safety is a big deal, I consider it no different then telling your kids not to talk to strangers, it is not like teaching how to cook. The children of these people shouldn't suffer because of their parents ignorance.
There are many bad parents out there, a school system should aim to help kids to break this trend (once done and maintained should result in a better generation of people).