Whats normal & whats too much for AS boy

[energis]

Ds 8 mild AS

How do I stop him play fighting in school?

The school has zero tolerance now, which I agree with but other children are still doing it and DS best friends mums seems to have no problem with it
The other 8 year olds are jumping off tables, flicking rulers, bag fighting and wrestling

I have been told (disclaimer!)
by teachers he should

Cop On
Grow Up
he's attention seeking
Not you again

How do I help my DS with this?

He is gentle, no aggression at all, lives by rules and is generally lovely

but he got his 1st warning in school today and he does'nt know why

posted in chat, mad woman alert!!

couldnt even do that right, stupid mum

Have you tried doing a social story with him? I find that they can be quite useful for teaching this sort of thing.