Selection bias is the most powerful force in education
This is a good article. I wish I could force everyone who pontificates on schooling in Australia to read it.We have an enormous private school system (part govt-funded, which is gross) that can get rid of students as they please. Then they go on to verbally dump shit on the public system, where they get to dump their problem students. Nice.We also have a real fetish for selective schools, which are essentially selection bias driven to a huge extent. Any suggestion that this isn't a good idea is met by an chorus of "you must hate smart people".