I think this is an interesting topic. It's possibly been posted elsewhere - I'll merge if so.
When I started primary school, my year level of ~100 people had two computers between us, and that was a huge deal. I'm pretty sure they'd just been installed. They were the really, really huge ones. Something like this pixelated mess, from memory:
(https://static.giantbomb.com/uploads/square_small/0/66/721264-500small.jpg)
And you could do diddly squat with them.
In Year 12, my year was the very last year at my school not to have personal school laptops, and I was absolutely stoked at that fact. I genuinely would have hated one, and don't think I would have done as well in VCE if we had to use a laptop.
I don't really know what primary schools are like these days. Like, do people of that age have phones? How about Snapping in high school classes and stuff? I feel like the whole thing has changed so dramatically in so little time - and not for the better.
Obviously, there are some really fantastic applications of technology in the classroom. But should we, say, ban mobile phones entirely?
I do see people using Snapchat a lot during class when they want to record something funny in class- my issue is that they don't ask permission and if someone's face is accidentally included in the video/photo, the poster doesn't consider this (also I kinda find it annoying when they post pictures of their teachers on Snapchat without asking). There was an incident in my school last year were these people were fighting (and this is rare in my school)- I was in the library so I didn't know what happened, but the assistant principal called everyone on the grass and told everyone that anyone who posts pictures of themselves or others in school uniforms is a breach of the terms and conditions (something along the lines of how that school emblem is technically 'copyrighted'- no idea if this is the right term- under the school and photos that have the school emblem is a breach of the copyright laws).
I agree with you about posting pictures of others without permission. It seems to have become the default in my lifetime with social media and with cameras in every device, but it has serious consent issues. And can also raise all kinds of horrible cyber-bullying implications.
Off-topic rant
However, the response from the school sounds very questionable to me. No, I'm not expert on copyright law, but if one tiny section of a photo can prevent the publication of an entire photo that is (theoretically) a creative act in its own right, then the copyright law is over broad and needs changing. Otherwise it can exercise a chilling effect on any new creative acts.
Plus there's the minor fact that copyright infringement doesn't actually mean anything till someone takes action on it. What's the school going to do? Take the relevant child to court?
Now if it were in some kind of school rules or student contract, that would (to me) be much more sensible. Taking and sharing photos of others can cause problems, and so the school has good reason to manage it. Still leaves the question of how you enforce it (Detention? Suspension? Expulsion?). But that's got nothing to do with an over broad application of copyright and everything to do with the fact that schools can reasonably set and enforce their own rules.