Little update - I came on here 2 years ago because my child’s school had told us there was a child identifying as a girl who wanted to use girls communal changing rooms for swimming. It’s taken two whole years (and the child is now a boy again after getting a haircut), but the school has finally published a statement making clear that changing rooms will be separated “on an anatomical basis” and anyone uncomfortable with this could contact the school to make a different arrangement. I was on my own, challenging the school board throughout this. Although others agreed privately no other parent was willing to get involved. So you alone can make a difference.