Wouldn't academy schools be much the same as any other 'type' of school, in that one can differ wildly from another, in terms of how they treat staff, staff satisfaction and retention, how they deal with disciplinary issues, uniform issues, what the overall experience is like for the child?
All I can comment on is the Academy school that my children are at, and our personal experience.
The staff faculty that we've met have seemed engaged, enthusiastic and positive, and told us that they enjoy working at the school and there is good staff retention. (They seemed surprised to be asked. I think this is a fairly good indicator of the 'culture' of a school.)
On paper they are very rigid about uniform, in reality they don't seem any stricter than the school I used to go to in NZ, in fact less so. Some of the belts masquerading as skirts have to be seen to be believed.
There have been issues with drugs, and weapons in the school. The school has taken them seriously, and has taken steps to get on top of it. There have been reports of bullying from within the community. My daughters have not suffered any incidents of bullying, and have got good solid friend groups, with nice kids.
There is plenty of homework given, but not so much that my kids haven't been able to stay on top of it, and there is plenty of feedback to parents, which is helpful.
So much also comes down to the personality and attitudes of the students and the parents too, as to how positive a school experience is.
(Oh, the school also has good physical facilities - lots of grounds, and a fitness suite and indoor pool).