Have a little while to go yet as year 5 but been advised to look.
Son has a statement which I have been advised would be moved to a special school statement 'very easily' as it's already an30hr support statement in mainstream.
My son has ASD and doesn't have any academic needs other than spelling and handwriting. His statement, other than this is social and emotional needs.
At school he can present as very challenging at times, especially around accepting support as he was bullied in a previous school for needing help 
His rigid thinking and lack of emotional literacy mean changing his mind on this is VERY slow.
On looking round the schools I have seen a couple of mainstream who had excellent SENCOs who were very forward thinking and robust systems in place... However they were stumped when I said he won't accept support willingly yet often crashes and burns without - current support is 'class TA' though is actually his but this is more difficult at secondary it seems (I can see how!).
I have seen a great special secondary who are confident thru meet his academic needs but I suppose I am looking for people's experiences, especially teachers, of kids resistant to support in mainstream... And how they did? Has anyone seen a school get round it?