Apparently Caleb turned up in a Scooby Doo costume.
I think special privileges and reasonable adjustments are two completely different things.
Reasonable adjustments are putting extra support in place to enable a child with SEN to be part of everything that is going on in the school. So maybe Caleb would have a buddy on stage with him to make sure he is in the right place to play his part in the play. Or maybe a teacher could be there to hold up pointer cards for him.
Special privileges is not returning the permission slip, not turning up for rehearsals but turning up on the night of the play, insisting your child is in the play as a turkey (which isn't even a part of the play) and then kicking off when said child is not allowed to do whatever he wants because a) he has no idea what's going on (having not attended rehearsals) and b) probably never has 'No' said to him at all (basing that assumption on his bat shit crazy mother).
My DD is being assessed for ASD, she may not be as severe as Caleb, she's very probably high functioning and has a fair understanding of rules. However, she can still have her moments when she has a meltdown over not having things go the way she thinks they should go. Do I demand that everything revolves around her? No, I explain to her that actually she can't do a/b/c because that's not happening today. I help her best by preparing her well in advance for any changes, any new activities and making sure she fully understands what's going to be happening.
I can't say to Dp that we can go and do something next weekend without sounding out DD first. I'm not saying she runs the house but I need to let her know in advance if she is going to be ok with whatever we plan. There's no point me insisting on putting her in a situation where she's going to struggle massively unless it's absolutely vital.
I think Caleb's mother failed him. She claims that teachers need to be trained in disability awareness yet in this case, she, as his mum who declares knows him best, has massively let him down by failing to ensure that he was fully prepared for the play.