"It seems to me that if private all-girls' schools are legal, then the parents who pay to send their daughters to the school, ought to get a school with only girls in it. Their reason for the request is immaterial." - Joe Offer

Private education is perfectly legal in the UK, some say it relieves the some of the burden of the state to provide education to all, it is a matter of choice and wealth. Single sex education is also perfectly legal and according to results a great deal more effective academically than co-ed schools. The parents select the school of their choice for various reasons and in doing so accept the charter and rules of the establishment they are entrusting their children's education to - the parents are paying for the education of their children, nothing more, and have no say whatsoever in the running, or business of that school. It is simply a case of the children having joined that school, the parents have not bought any share or part of that school.

In this particular case the parents have elected to sent their daughters to an all girls school and that is where their daughters go. There are no boys in the school apart from in the nursery pre-school section (3 months to 4 years). How the school markets and utilises its facilities outside of school hours has got nothing whatsoever to do with the parents.