AeolineReed I'm afraid you still havent actually shown me anything extra I/DD would be getting for my X thousand. Claims of extra confidence or an ethereal 'otherness' lack the bite of being quantifiable (I'm an accountant so value for money is important to me).
I am sure that a small girls school will produce a particular type of poise. Does it take X thousands per year to teach? Is it a desireable quality? Other characteristics and qualities are encouraged by state secondary schools, a certain resilience, a certain independence of study, an ability to get on with things despite distractions.
Minority subjects and extra curricular activities are also available even in the mediocre (and ours is definitely in that category) state secondary schools. They will be different from those available in a small, selective and exclusive private schools but they are still there.
Basically, I think that an able and committed student without other problems and with interested, concerned and enthusiastic parents will do well whatever school they are in.
Interested, concerned and enthusiastic parenting for me (it will be different for others) is more than just making sure homework is done. It is about presenting the student with opportunities for extra-curricular activities (county music schools, cadets, drama schools, sports clubs etc etc). It is about holding the school to account (I have had my teeth in one teacher's backside for the last year and a bit). It isnt necessarily about spending a lot of money.
I'm not saying that the choices you have made are wrong, AeolineReed, they just arent choices I would have made for any of my DCs no matter what our financial situation was.