In my experience the academies are focused on academic success and making everyone conform. They tend to take a zero tolerance approach to behavior which means they are less likely to spend time finding out why a student is misbehaving. Academies in my area are less likely to spend money on intervention for their pupils who are not coping with school, preferring to shuffle them round the other academies in their trust.
My son is and always has struggled in school. 3 different primary schools - we moved him due to the constant criticism and relentless negativity from teachers about his attitude and behaviour.
All three schools refused to accept he could have adhd/anxiety and chose to believe he was in control of his behaviour.
He is now 15 and has struggled to fit in at secondary school, has been excluded several times and again they believe he is choosing his behaviour.
I however see an incredible hyper active impulsive child from age 3, unable to focus or behave appropriately around other kids, butting in on conversations, rocking, sensory issues (he kept rubbing chubby arms/faces at school). Upsetting others but not understanding why it upset people. He was a horrendous child at home from 4. No issues at home, no abuse/drugs/drink. Parents still together (just!!).
He's fallen so far behind at high school he's anxious about his future and has massive anger issues and will lash out at walls/doors etc. He's now started smoking weed to cope and chill out.
I'm at my wits end. There is no help.
My son is being left to the scrap heap. He wants to become a joiner/plumber and has a good work ethic but school cancelled his work experience due to his 'behaviour' in school. 
What advice can you give us now?
I feel School are adding to his mental health problems and giving him more anxiety than he can cope with. I'm terrified he'll end up lamping a teacher. Some of them seem to enjoy antagonising him for a reaction so they can put him out the class.