My area is (and this is about primary for most and both for other points).
Very densely populated
Really lucky to live in an area where the vast majority of schools esp primary are good.
A very high proportion of faith schools of branches of Christian schools locally and branches of Christian and Jewish schools in wider area.
The faith schools in general DO tend to have the faith as a core part of the school ethos. Worship, learning about the religion and what is in the texts as a faith thing (IE on top of re learning about). Lighter or heavier sure. But a core thing. Teachers who are practicing are preferred if possible.
A history of illegal things happening with selection which was in the news a few years back - questions on forms that were not allowed, asking for donations etc.
Some schools being in the news for essentially ignoring national curriculum and teaching religion, girls and boys different things, that sort of stuff. This crops up over and over. I hope it's been addressed now.
From one sect opening their own school when mainstream education officer the years could not meet their practices (no computers, television, news etc). What happened to those children? That community used to be about the place they just... Vanished. How can those children possibly be getting an education in line with national curriculum? What are they being taught? Yes they are out of state system but... It bothers me. I was at school with children from that group to 6th form and I mean who knows? Maybe it's fine? Hope so.
The density of faith schools meaning that for those who are not the right faith/ have ticked the right boxes, it means a school that in this area will be bloody ages to get to when there are multiple schools in walking distance. And children being brought in from further away. I think that walking to school is brilliant. Reducing pollution is great. And this Criss crossing and time to go further is no good for pollution congestion the children etc etc. That's probably less of a big deal for others but it's a really good time to chat etc walking and exercise rather than going in back of car. Some use bus or tube obv but it just feels a silly way of organising things.
So that's where I'm coming from.