Am parent of Statemented child and am also a teacher.
The teacher was a little rude, from what OP says, but, more importantly, clearly didn't know what support the boy needed.The school haven't got enough support/ communication about the OP's son in place BUT the real shocker on this thread is the attitude about SEN children dragging everyone else down, or only academic SEN being real SEN, or how teachers shouldn't have to deal with children 'like this'.
Disgusting or ignorant? I can't decide.
The myth about only academic SEN being real is the first load of bollocks; my son has a TA with him every single minute of every day although he is above average intelligence, as his autism makes him a threat to himself and others. He is in mainstream education and his autism is an educational need although his learning is fine, because social and communication skills are also part of education! It's not all about exams.
The idea that some teachers find addressing a child's SEN a little bit beneath them and too much like hard work is crap too. Yes, it's hard, but it's what having an inclusive society is all about. It's our job, to put it bluntly.
Many children like my son fit nowhere. Too able for most special schools; too needy to mainstream to be a comfortable fit. He used to be known as the 'hitting boy' or the 'kicking boy' or the 'biting boy'; he's now quirky and occasionally volatile, but much better, thanks to those teachers who put in the time and thought to help him, the TAs and pupils that supported him and the parents (99.9%) who didn't demand that he was removed from the school immediately for his behaviour. In society, 'these people' exist as adults, mixed in with everyone else. Rather than separating them, shouldn't we aim for inclusion?
OP, I have no idea whether your son needs a Statement or not. However, what you do need is a meeting with HOY about how staff will all be in full awareness of your son's needs next year. Good luck.