Really interesting thread...
At the start of my career as a salt, I thought that special schools had no place in today's society. However, I have copletely changed my opinion.
Integration into mainstream schools sounds great on paper, but the reality is often that the child's abilities are so at odds with the work that is being done, that no real education is going on (coupled with the fact that many people lack the intelligence/imagination to modify the curriculum for the child's needs. Eg Geography doesn't have to be about where the capital of Spain is. It could mean remembering where to put your coat, or navigating your way successfully to your seat in the dining room.)
So, you get a bored,alienated child who is overly reliant on an assistant and often with no real friends.
By contrast, a good school for kids with s/n will have specially trained teachers (not always unfortunately!) an emphasis on useful practical skills,easier access to stuff like salt and physio, music therapy etc.
Kids are generally more confident and mutually supportive. They know how difficult some things are and the sense of camaraderie and friendship when for example it is announced at assembly that someone has won a badge for swimming or completed a work placement, is brilliant!
(I mentioned on another thread my line manager's wish to do some research into the mental health of kids with s/n in specail and mainstream schools respectively.)
However....as always, a lot depends on the child and the school. I've seen some kids thrive in mainstream schools, but for most that I have seen anyway, at secondary level it can become stressful and isolating-the very opposite of what is trying to be achieved.
Also, people with DS vary so much. I have worked with some who have additional health problems, some with quite severe ld and then again others who lead pretty normal lives, have b/g friends, and hold down jobs. I know (don't work with-she doesn't need me!) one young woman who reads and writes better than a great many people, can hold a complex conversation and is at present trying to sort out her mum and dad who are not getting on very well at all!!!
PS Attempts are being made to shut down many special school-a very bad move IMO.
PPS Someone mentioned not being statemented if in mainstream schooling. Completely bizarre...we have loads of statemented kids in mainstream schools. Sounds illegal to me...basically saying to parents that if they want m/s schooling, the child is on their own...outrageous!