Bloss I l-o-v-e-d your post from yesterday about the definition of necessity - it really clarified what we are all talking about.
I think we all realise it is not a NECESSITY, but it is NECESSARY if we want our children to spend their day in a well funded, stimulating, calm, etc etc place of education.
I also think part of the reason private school parents think it is a neccessity, is that once they have experienced it, they know their children are probably a year ahead of their counterparts and are used to a style of teaching. Then the effect of putting their kids in state school is worse than if they hadn't gone there in the first place.
As a private school teacher I know parents that are hit by the recession and are now skint and their kids are really, really bored in the state school, having already learnt french from the age of 3 and being so far ahead. Boys and boredom make a bad mix. Plus they have no friends. How horrible must that be?
I guess some of you will now say " oh poor them - not!"
But that's nasty and ignoring their very real and valid concern.