You kind of hit the nail on the head, albeit inadvertently, adair-
..." If dd is slightly compromised because a child who doesn't speak English/has a SEN needs a bit more time, well, that's a fair sacrifice in my book. I kind of think, well, those children could be MY children and deserve all the support they can get".
But they often DON'T get that help, do they?
I too am all for 'inclusion' BUT I am sure you also recognise that having a severe SEN/ADHD/appallingly parented DC in your DD's Latin class might do rather more than compromise your DD's education 'a bit'!
Really, it has been shown that DCs almost invariably do better academically when working within a fairly narrow ability band, particularly in Maths, foreign language and science. It doesn't matter whether the DCs concerned are rich, poor, white or non-white, it's being of an ability to access the taught lesson that counts, surely?
What I think Toby and all are naively thinking is that by setting up their own school, they'll end up with neat rows of school-ready, clever middle-class children reciting Latin vocab; they imagine that inevitably the token non-clever, potentially disruptive and/or SEN DC will somehow suddenly 'see the light', influenced by their own marvellous offspring and come onboard.