Just to make a general point which I know won't be popular, but hey...
Of course education policy needs to cater for all children and aim to meet their diverse needs, but inclusivity at all costs is a disaster for the country as a whole. We need to ensure that able students get what they need and are able to reach their potential. This was what the grammar schools did, and yes, I know there is another side to that coin.
Otherwise, where parents can afford it, these children will go to independent schools. Parents of able children should be able to entrust them to the state system and I think it's an absolute priority to regain the confidence of parents. Schools need to do their best to eliminate classroom disruption - that's the problem, not so much the fact that children of possibly lesser ability will be in the classroom too.
I'm sorry to sound so hard-line, but I've worked in schools where ideology trumped every other objective. It was far more important to be seen to be totally inclusive than to do what was best for individual children. I could give many examples!
And if I'm coming over as a nasty educational reactionary, I'm really not - but I am a pragmatist, not an ideologue. I used to hate the 'Gifted and Talented' initiative, actually, which I thought was totally wrong-headed approach to meeting the needs of able students. I thought that was appallingly elitist! You don't label children in that way at school, for a start, and secondly, extra opportunities for enrichment should be open to every child who wants to participate, not some chosen elite. If a child with learning difficulties wants to join the Shakespeare theatre trip, then they should be encouraged - it wouldn't harm the potential Oxbridge contingent's experience of it!