When I read that I thought WTF? but then you justified it, I think that's fair enough. Ideally I want any kids I have educated state school, mixed sex, but if that's not suitable then I'll look at other options.
I'd certainly not let my political/social views give any kids I have a disadvantage from the off.
The fact is at the state school level there is a MASSIVE variation in quality, from the few schools I've been at/known about/worked at.