"If I understand correctly, this is a private (private in the US sense, meaning, not with federal funds) school that bills itself as "all girl". Why did the school violate its charter?"

"As for this 'all-girls' school, it says that it has 250 members of which only 36 are boys. Why are the boys there? Just for the revenue? A large price to pay for false advertising."

Two statements by Ebbie, who clearly has the wrong end of the stick.

If she were to read the opening post to this thread she would have picked up on the fact that it is: "The thriving Shirley Gymnastics Club, which has 250 members of both sexes, has been using the school hall five evenings a week for the past 14 months."

So no charter has been "violated". There has been no "false advertising". What the school quite rightly is doing is to make most use of its facilities. Answer here though seems simple. You have a group of parents who object to this club using the schools facilities and want it closed. The Club no doubt pays the school for the use of its facilities. You therefore have a number of parents dictating what the school can and cannot do. You have a clear loss of income. As Head of Governors I would invite those parents to stump up if you want to cost the school revenue and give the Gymnastics Club a reasonable interval to find new premises.

It would be interesting to know how many of the Gymnastics club members are also children who attend the school. I would imagine that there are a few and the 36 boys, particularly the younger ones are probably the little brothers of the girl pupils. Stopping the activities of the Club at the school will no doubt increase the logistical problems of those who wish to attend and those of the parents who wish to attend. When my children were attending school their various clubs, etc sometimes meant that either my wife or I drove 140 miles a day delivering them and picking them up. Had those clubs been dictated to in the way that it would appear this one has then my children would have followed half the sporting interests that they did.

Actual best way forward is that the parents are told in no uncertain terms that they do not run the school and that if they don't like it they can withdraw their children from the school and send them elsewhere where the cultural and religious constraints of the parents can be pandered to. The state of education in the UK is such that a "good" school is quite a rarity and if you've found one you cling onto it for the sake of your children.