Nanaej - we experienced the same judgement by neighbours and other professional colleagues and friends. We chose to stick to what we believe, and were accused of sacrificing our children - even though we could have afforded to send them to private school instead of the local comprehensive.
Never understood this 'sacrificing' bit at all. They did really well academically, but yes, possibly could have done even better with prep and being 'sat on'- and went on to excel later on professionally. But they also learnt something else which to us is priceless - how to cope with all sorts of people, how to look at things from different angles, how not to stereotype, how to fight for one's corner when necessary (with our support in the background). They can now talk to people at every level- unlike their friends who went to private and very selective schools (not just academically but socially) - and it has really stood them in good stead and made them much stronger, more confident, more versatile, etc.
One of my colleagues was Deputy Head of a comprehensive but sent her kids to private schools - and I always thought it was a terrible 'do as I say, not as I do' example. Later on when I started teaching in local comprehensives after training as a mature student after our youngest started school - I was often offered much easier/cushier jobs, with longer holidays, etc, in private schools, due to our 'contacts' - but I just couldn't do it.
For me, 'doing the best for one's child' but damaging the social structure of the country even further, and therefore perpetuate and further deteriorate the society we live in, our kid's and other kid's live in - seems totally counter-productive and destructive. What is the point in doing 'the best for your child' if said child cannot walk home safely, play with other kids in their area, cannot go to town without being beaten up for 'being posh', etc.
Here in Switzerland all the kids go to the local school, irrespective of social class- and social divisions are not marked as in the UK. There are plenty of private schools in Geneva and Zurich- but they are mainly for expats with children who could not cope in the local system due to lack of local language- and who want to keep their children in a British style school system.
I hated living on an 'estate' (be it a very middle-class one- where everybody had the same sort of jobs, ideas, etc) where people from the local council estate would refuse to talk to me because I lived in a 'posh' area. We just have to move out to a more mixed community before it drove me crazy. The UK education has been split and polarised for so long- I just do not have any idea how to mend all those rifts now. When you look at areas like Glasgow where children are still sent to schools on strictly religious sectarian lines - doing away with religious schools would be a start (but would push more parents to send their children into the private sector!). Tony Blair made it so much worse by giving school 'licences' to Creationist and Islamic girls/boys schools, and now Gove continues the total disaster with his so called 'academies' etc.
Sorry for the length of this post. I am passionate about education - and always will be. I wish my grand-children could come to school here, and not have to be educated and raised in such 'sectarian and divisive' conditions.