Car drivers are always like this, everywhere. Even when I was a little kid, last century, it's a village school, every pupil lives in the same mile or so radius and yet loads of them get picked up in a car.
I now live in a big city but when I walk to the office it's just before school starts, so I see that yeah at first I'm passing kids happily walking with parents but just outside the school it's a jam of idiots who "just quickly" are here to drop the child from a car. The contrast in a few weeks when school is closed will be dramatic, that street is dead, but I bet every one of those parents thinks of it as a "busy road, they ought to do something about that" while not remembering that it's busy because of them.