So.... you don't get the concept of having friends at school, socializing with them after school, visiting them after school and weekends...
It's a different kind of bonding than having friends on that school, different friends in the neighbourhood and again different friends at some church ..
I'm not saying that one is better than the other....(actually, perhaps I am) I'm just surprised how you cannot understand that it can be a big deal.
Socialising when deaf is hard enough. Bonding with other children is an important part of getting accepted. Especially for girls, verbal communication is VERY important. (Boy can just play with each other... no verbal comms needed, girls need to talk..)
So... instead of interacting with children at one place for 6 hours at school, then another place for 3 hours (like in the neighbourhood), we decided that for our "kid with disabilty" having strong roots in the neighbourhood was the way to go..