The reason that many parents - who can - send their SEN children to a private school is because it is very hard to get a child statemented in the state setting and then very hard to ensure that statement is the right one and the recommendations are followed.
I guess it depends on the school. Our primary has a very active SEN programme - which is why (as I mentioned) one family moved from private to state (and, yes, they could afford private).
The down-side of this is that the school is rather weak on that other end of SEN - the Gifted & Talented programme.
The government policy of one style of education fits all, their closure of special schools and their totally bogus mantra of ' every child matters' mean it very, very hard to find any form of decent education for some SEN children.
It's not just this government - it was the conservatives who started abolishing grammar schools as secondary / comps were far better - 'one-size-fits-all who can't pay'. I do agree that the SEN schools being closed down is wrong - there should be good provision at both ends of the spectrum.
I found some of your comments offensive.
Which ones? They certainly were not meant to be. If it was the 'positive school reports', that was true in that particular setting. Mind you, trying to get any quantitative information out of some teachers in both state and private schools is like trying to get blood out of a stone - they're scared that you'll start using it to boast around the playground as to how ones child is better than the other, whereas we just want to know what to expect from our children.