I think my 14 year old is no longer coping with mainstream school

Hello I am new to this forum but just looking for some advise. I have been struggling with my 14 nearly 15 year son who is constantly getting into trouble at school. I think he is struggling with anxiety around school and this is contributing to his behaviour. His school makes no allowances for his autism and I am starting to feel like he is no longer in the best place for him. Just wondering if anyone new of any schools in bournemouth that may accommodate him. He is not high functioning and in fact he is very behind his peers. 

Thanks in advance 

Justine