@BigWoollyJumpers
Which is ridiculous when these schools are in existence to cater to a single sex, boys and girls. You can't therefore have mixed sex sport, because they aren't mixed sex schools. Of course you may well have trans boys in girls schools, for example, but they still play sport all together with the "girls" regardless, because, you know, they're girls. They also all go on trips together already, regardless.
Obviously, you won’t have mixed sex sport in single sex schools, but the Torygraph article is speaking about schools across the country signed up to SW - so both single sex and mixed sex.
You’ve rather missed the point though - SW is encouraging all the schools that they’ve inserted themselves into to be “inclusive” by erasing terms like “girl” and “boy” and replacing them with gender neutral words.
It’s part of the plan to muddle the meanings of words (girl, boy, man, woman, male, female) to the point where they are meaningless and anybody can identify themselves as anything they choose.