Oh come now. There has been a sea change, and if you are old enough, you know it. It really was harder to get, harder to get away with, and the curve was skewed toward a 1. quick look at some breasts rather than 2. a jaded wondering what could be harder than hardcore.
Honestly, there will be plenty of time for that when you are an adult ... you aren't missing anything.
Also, when Little Johnny came into school with a Playboy, that was clearly not the school's fault. If the school is providing internet access without any kind of filtering then that is seen as the school's fault when the kids start downloading porn over it. (Kids downloading porn over their personal 3G connections in school time is another matter).
In the submitter's case, he's talking about BYOD where the kids are going to be using their own devices (phones, tablets, etc) rather than classroom computers and are therefore going to be doing it in situations where there is no teacher supervision, so the whole "pay attention to what the kids are doing when they're using the Internet" thing isn't going to work unless you employ a *lot* of teachers and ensure they keep all the kids in sight at all times, or you cut off Internet access for the kids most of the day (which I would argue is counterproductive).
And that's ignoring stuff like virus scanning, work to prevent e-bullying, etc.
It used to be that *most* web sites were unencrypted and you could get away with just blocking all but a few encrypted websites. The tide has turned and now there are a huge number of encrypted sites that need to be allowed. It's unfeasible to whitelist all those sites and provide no further filtering on them, so intercepting SSL streams is the future, I'm afraid.
Besides, why in the world do kids need access to computers in the classroom? When kids are working in a computer lab or something, have someone watching them. If you can't trust them to not look at porn, then they're not mature or old enough to be left alone with a computer.
Now this, I heartily agree with.
Sounds counterproductive to me. The world we live in today requires people to know how to use the internet in their day to day lives, both for work and pleasure. If you refuse to let people use this valuable resource except for the 1-2 hours a week where they have an IT lesson then you're really screwing with their education. Its pretty much the equivalent of banning people from reading books outside of English lessons for fear that they might read something a bit too "explicit" - the answer, of course, is to ensure there are no explicit books in the school library, not ban reading altogether.