Of course to me there is just one problem with Bryony Gordon's article - she doesn't actually have anything to compare it with! I wonder why she thinks that the behaviour of groups of girls does not happen in mixed schools? Obviously from her sweeping generalisations, we now all know that the psychological (rather than physical) bullying, only happens in all-girls schools?
She is right in one sense - boys do tend to sort out their differences in a more physical way (eg a fight), whilst girls are more bitchy (if I can use that word on this forum!). However, this happens with any groups - unless she suggests that we have only 1 girl per class, then she will get along fine with all the boys and there won't be any other girls around to be nasty to her!
It's just not the real world - and Bryony just comes across to me as rather bitter! (Although clearly she has learned how to make nasty, hate-filled comments - must be because she has left with so many "mental health issues")
I personally always felt that I would not be in favour of single-sex education. However, when considering our DD as an INDIVIDUAL, then we all felt that a single-sex school would provide best for her. She still has lots of contact with male friends - many from her previous primary, but also new friends from the boys school next door. She has also told me that she is happy in her school, without boys in lessons and in the playground!
In this day and age, there are so many opportunities for both girls and boys to mix with the other gender outside of the school timetable, that it is perfectly reasonable for well-rounded, happy and well-educated young adults to emerge from a single-sex school.