Mainstream vs special school

Hi all. Just looking for some opinions on mainstream vs special schools. My son is due to start this September. He has almost full understanding I think but is almost non verbal apart from the odd work of the week. He also has limited eye contact, does not want to interact with children and can bite etc when distressed. We don't know whether being around Neuro typical children or being in special school is the best thing for him, or even if he will get into a special school. Anyone with any experience of children in different schools? 

Thanks, Emma.