Benedikte. I agree with almost all of what you say except I don't think the school were deliberately shaming him, just being a tactless and insensitive and stupidly not realising that this kind of info would be transmitted back to the poor lad.
He has been shamed by it and by people's reactions and you are right it should not be taken lightly. But what can be gained by doing more than letting the school know the result of their ill considered reaction. They didn't have his or his parents permission to publicise him in the assembly. They clearly didnt think it through and they should be told to.
For all the people saying he should man up - Poor lad, give him a break! Checking your results on a notice board is not the same as being "featured" with a blown up picture in a large assembly and I suspect that the school indirectly referring to his circumstances is the key to what is causing the offense.
A mortified teenager can be humiliated far much less than this. If it seems huge to him, its because he's young and inexperienced, and if he wants to stay in his room because he's mortified - then perhaps that's what he needs to do to process it. No harm to stay in a safe place catching up on Netflix for a few days if he feels under scrutiny, he'll come out for air soon. Young adults can be so sensitive, particularly ones who have been through a lot, stuff that we've all learnt to brush off and shrug our shoulders to, simply because They haven't learnt how to do that yet.
Sometimes the worst thing about being talked about for reasons beyond your control is being aware of people's unwanted curiosity and wanting to see how you'll take it, or contacting you for a news update or comment which you just know they are going to forward to keep it going. I don't blame him for keeping a low profile.
The good news is that he's got his place at uni and will soon be in a brand new environment where he can be seen as a new person without all the baggage. School can be a goldfish bowl and most sixth formers may miss their friends but in reality they are really ready to go.
Willow Sorry, I think the posts got crosssed
FTIme Buyer.. I hear you! and very many congrats on your pregnancy. What daft comments for them to make. Tell the detractors to shove it! You'll soon be able to prove them wrong when your lovely baby arrives and they all try to decide which side of the family he/she takes after instead.