I think that the next step is to request a meeting with the school. Have you spoken to these people face to face?
I wonder if you could pretend not to have gotten the email?
At least until things are more settled.
Can your son do an independent study with one of the English teachers during lunch, or something like that?
Your district and state probably have websites that explain what the 'rules' are. There are probably people on the state level who you could email and try to talk to on Monday.
Just remember that 'because CTY said so' isn't going to cut any slack with the school. I would suggest more of an 'this is what is needed for my child's social, emotional, and academic nuturance.'
Good luck,
Grinity
