My dsd has no SN as in she has no statement or diagnosis.
She does however have behavioural problems as pointed out by her GP, school and social worker.
She also happens to be kind, empathetic, eager to please and extremely talented at arts and dancing.
Her behavioural problems do not affect or disrupt her class, you need to consider that there is a massive spectrum of "behavioural problems" and they do not generally come under the label of SN or indeed SEN.
Her school are crap at helping her to raise her self esteem and she has been left to her own devices for much of the time simply because the teacher is spending far more time dealing with NT children who are badly behaved and disruptive.
DD's school on the other hand has a very high number of children with SN and also behavioural problems. They come from outside the catchment area because the school is acknowledged to be so good.
The school is a new build and has complete accessibility for those with pysical disabilities. There are quiet rooms for children who need a "safe" space and there are lots of smaller areas within the playgrounds as well for children who have difficulties with social skills to learn to interact with others without the need for agression for example.
Dd can do basic sign language, she can also read the alphabet in Braille.
All children are included in all activities where ever possible including residential weekends away etc.
The school has a fantastic sporting and academic reputation. I feel that it's ethos of inclusion and empathy for others has enhanced this school into one which i would recommend to anyone.
I am confused as to why you (op) feel that inclusion is a problem.
In my experience, inclusion is an asset, it is the school itself that can be the problem. For example, if my dd's school didn't have such good facilities and dedicated teaching and support staff then yes, classes might suffer from disruption. But i don't think that would be because the children are a problem, it would be because the lack of decent support systems were a problem.
We are moving my dsd to the school in Sept and i have every confidence that she will thrive.