Vinehall School headmaster, Joff Powis, said: “I very deeply regret the widespread offence caused by the recent open day advertisement.

It was wholly misguided, and should never have seen the light of day. I must stress it is in no way a reflection of the ethos of our school and the worthwhile work we do here.

We are taking a long hard look at how it came to be created in the first place, but as Head, I must take full responsibility for its appearance, and can only apologise for such an unfortunate error of judgement.

Vinehall prides itself on being a friendly, inclusive place, where the values of modesty and broad-mindedness are at the forefront of our guidance and teaching.”