My children were Sen and I was lucky to be given advice through the hospital paediatric psychiatric department, rather than the local authority education department ( who I had an excellent relationship with - I cannot fault them either). They are both in their 30s, so I know things are different now.
So the advice from the psychiatrist, who had children of similar ages in the local school too:
Whatever teachers might think, the benefit of schools is socialisation. Nothing we can do as parents can give our children the socialisation they will have at school. Children will encounter difficult people all their lives and school helps them learn how to make friend, realise that not everyone is as friendly as they seem. There are bullies, people who are different and school is a place where children can learn to deal with everyone in a (hopefully) safe space.
Education need not be the most important thing. Most parents can supplement their children's education outside school - the 3 Rs, for Primary children are easy enough, but the arts, sciences, history, geography can be led by children's interests and build on what's done at school. Weekend outings can have an educational element too - recognising trees from their leaves, sea creatures at the beach etc. Secondary education is more difficult when the subject go beyond what parents learned. We were lucky, between us we could cover most things, but for exams we did employ tutors. Explore sharing a tutor with other families.
My advice is to be 'that parent'. I certainly was, particularly in Primary school. Some of the teachers there thought they knew all about the conditions (they didn't) and thought they didn't need to learn (they most certainly did. Integration was very new in our area). I chaired a Sen parent's group for the local authority which gave me access to senior staff at the department. I was also elected to the School Board by other parents (we don't have Governors here) so was able to represent other Sen parents at meetings and other parents too. The Educational Psychologist persuaded me to run training workshops on disability at several local schools - it was a revelation to me and I know that there were some teachers who were very resistant to integration in schools. (Yes, I had the ability to be an absolute pain in the backside and was probably viewed as such!)
For me, secondary school was a joy. Teachers there recognised that they didn't know everything and were keen to learn. They would contact me if there was a problem (Primary school would contact the Ed Psych after letting it continue) and we would reach a solution together. It was so much better and easier to work in partnership.
Ultimately, it all worked out and was worthwhile. Both offspring went to university, achieved good degrees (counter to expectations at Primary School) and I heaved the greatest sigh of relief the day #2 finished final exams. I have never had anything to do with schools since and do not want to ever again.