OP, could you show the actual letter from the school, by any chance? You’ve gone this far, you may as well “name and shame.”
The irony is, if your DH had paid your deposit and signed the forms, you would have been in a contract with them and they would have had to follow due process in “expelling” your child, which is effectively what they’ve done. Something like an outburst in class would not have been an expellable offence in normal circumstances, that would be reserved for actions such as bringing drugs on site or violence.
It sounds as if this teacher has deemed your son “disruptive” or “unreachable.” Rather than having to sound vague or judgemental in the letter, they have focused on the supposed use of this one word. Saying something like, “he was hyper” sounds too subjective, but the problem with the use of a word is that you can’t disprove it because you errant they’d and have no access to anyone who was.
Was the other boy’s place withdrawn as well? Is there any way if finding out, I wonder? For all you know, they might have decided to do this to a number of them?
Does your child have any history of this kind of behaviour? Have you ever been called in for anything like this before?
What was his interview like? Was in a group assessment event, or individual interview?
I’m very surprised the school were not prepared to liaise with your prep head even. Most schools want to preserve positive links with feeder preps. They are businesses ultimately. It’s one thing refusing to communicate with a parent; quite smithed to refuse to speak with a professional peer.
Thank goodness you hadn’t declined your other offers yet.
I think Emmanuel is more “highly regarded” anyway, tbh.
Good luck to you and your son.