I'm partly just mouthing off and getting a chip on my shoulder about my mediocre comprehensive regional high school...
But yeah, I do know a lot of people who went to Sydney Girls and Sydney Boys (and I worked at Sydney Girls for a while) and a lot of people who went to Sydney private schools. It's a different sort of snobbery, but there's still a lot of it.
Of course, it could just be a Sydney people thing, rather than anything to do with the sort of social environment fostered by the schools.
Oh, I definitely agree that there is a degree of snobbery present with selective schools, akin to that of private schools (I think the idea of school pride in general is quite juvenile). My issue was more with the 'and should be abolished' part.