Well, firstly, I work in an area of extremely low socio-economic status so the parents really couldn't give a fuck, which is why the teachers end up mediating it. Secondly, technology changes so rapidly that there are probably parents who don't understand the magnitude of internet safety, or more appropriately, internet savvy. Think, Facebook was founded only 10 years ago and now there a plethora of social media sites out there that have grown in immense magnitude, their kids can probably outmsart them in terms of blockage/banning/education/etc.
I just think there probably needs to be more education on building up your resilience, dealing with bullies, and acting responsibly and safely in public and networked internet spaces. It's not always about "why aren't the parents supervising them" - do you really think that parents can monitor 100% of a child's internet activity in this day and age?!
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