I think social mixing is more important than school mixing.
If you have the option of both, then it may be more down to your dc's personality and preferences, rather than the underlying results of the school.
All mine will end up in single sex schools, I was really concerned about this. DS1 is now in year 10, trust me it's not a problem, great social skills. Where there's a will...
That's a really helpful insight, thank you. We did ask DS before deciding on his school options whether he would prefer a single sex or a mixed school and he said that he didn't mind that much, but if he could choose, he would prefer a boys' school, because that would mean more friends to play football with. We applied to both, but as it happened, it was a boys' school that offered him a place.
DS is happy where he is, doing well grades-wise, but I wish his social group was more diverse. At the moment, pretty much all of his friends are boys (unless there is something I don't know about!
) and I think only one of them has a sister; in terms of after-school activities he does mainly sports, so again a largely single sex environment. There are some girls where he plays tennis, but from what I can see, girls tend to stay in their own little group and boys do the same.... Should I nudge him gently towards some more clubs/activities that cater for both boys and girls, so that he has more opportunities for social mixing or is it better to leave it and stay out of it all?