[vetinari]

> the students can still get access to whatever at home, or using coffeeshop WiFi, or whatever.

That's fine, these are not school responsibility. Once the parents complain, you can redirect them to their home or coffeeshop.

[UnFleshedOne]

What stops them from downloading this stuff and still bringing it to school?

[vetinari]

The point is not stopping them downloading this stuff.

The point is stopping them downloading this stuff using schools property or infrastructure. If they download it elsewhere, it is someone others problem then. If someone complains, its someone elses' fault, and the school can fingerpoint.

If they just bring it to the school, they can be disciplined, but no other steps need to be taken.