@Mosmuma I mentioned up thread that I wouldn't put my children in a school if they were they only Black child in the school. Unfortunately seeing people who happen to look like them isn't always enough, and not a guarantee of inclusivity. One of my DC was in a class where 25% of the girls were Black. But the majority of those girls went to the same church and excluded everyone else most of the time. In five years, my DC was only invited to a handful of events and felt bad for not fitting in with them.
For balance, at one of our prep schools, about a third of the class knew each other before they started (went to the same nurse and were white). It was a class joke amongst the other parents how exclusionary they were, especially as they excluded everybody, Black, white, Asian.
A newish friend's mixed race DD goes to a state school in a majority white area, and is racially abused by her "friends" and appears to be picked on by the teachers. Unfortunately this is the nearest secondary school, all the others are likely to be the same, they can't afford to move or send her to an independent school.
I've also noticed that Black teachers in majority white schools are ground down by the system, and are so tired that they can fall for the tropes about Black children and their families. It's only when they stop working in the state system that they realise the damage it was doing to themselves and Black pupils.
If Black parents can afford to, or they qualify for bursaries and scholarships, I would always urge them to choose an independent school over a state school. For me, it's less about exam results, university and future jobs prospect, and all about the about the journey.