Kids should have absolutely no expectation of privacy.
I've been teaching my kid he has a right to privacy since the day he asked about having a baby monitor in his room. I told him why it's there, how to turn it off and that we'll take it out completely if he ever wants it gone. If his school forced this on him, I'd explain to him why not to carry it every where he goes and why he should never use it for personal communication.
> Article 16
> 1. No child shall be subjected to arbitrary or unlawful interference with his or her privacy, family, home or correspondence, nor to unlawful attacks on his or her honour and reputation.
> 2. The child has the right to the protection of the law against such interference or attacks.
Famous hacks and releases of private information, reported in the news, are good teachable moments.
My advice is that they can still get good grades while sticking with "safe" opinions and topics of discussion. This is also good preparation for corporate life.
Telling children they are entitled to privacy is setting them up for a world that will surely disappoint them.
Also, why, if they are human being, are they subjected to lesser criminal penalties than "adults" ?
Yeah that's something that we really need to fix, although aren't there many cases of minors being charged as adults?
But that's not what you actually said, and I'm not so sure that it's what you actually meant. Could you elaborate a bit?