I haven't read them while thread just most and the ops.
Op I know expectancy what you have been through. Very long story short, We moved Dd because of a violent bully and 6 months later, he was moved from the old one into her new one.
Within four months the police had to come and charge him with assault.
I totally get how you feel. However, if I had sent Dd with sweets on her birthday I would totally get and expect this boy to be given one. Schools and teachers can't exclude one child. I can't see how you thought this was ok.
Again with the party invitations, I totally get that you don't want him there. But the school is just inviting a shit storm if they had done this. There are weekly threads on here about people complaining because their child has been excluded.
Wether it's right or wrong, schools are in a really bad position when it comes to invites and things like this when a child is excluded.
Before being disappointed or angry at her. Calm down until Monday and speak to her about why she kept them. I am sure she has no intention of keeping them permanently and perhaps has a reason. She may have caught your eye. But she may not have also remembered at that minute.
She may need advice as she thinks this will stir everything up again and cause more problems for your son.
It's a very difficult situation for you and you have my sympathy. But I also understand the school is in a bad position.