Why not though? Exploring, customizing and extending your operating system should be part of the learning experience. We're on Hacker News, right? I agree that

Why not though? Exploring, customizing and extending your operating system should be part of the learning experience. We're on Hacker News, right? I agree that you need to forbid certain websites and add some content filtering on the network. But there surely are kids able to circumvent those restrictions and most kids get in touch with 'dirty' content anyway. They better learn how to use the internet in a responsible way. Preventing them from hacking around and giving them a consume-only environment is worse I think.