My dd is in Year 9 at a girls' school. It's racially very mixed which is a good thing and I naively thought that the girls all mix together regardless of race.
However the friendship groups seem to be quite segregated. There is a large group of girls (probably the 'cool' group) which are mostly white girls and dd has told me recently they are known as the White Girl Gang. I feel uncomfortable about this but not sure whether to mention it to the school. And I don't want to make things awkward for dd (she's not in this group but is friends with a few of the girls who are).