In China there is 1 exam, the Gaokao. This exam in no small part decides your future. In the past, you had one attempt, and if you failed, tough luck. Now they let kids retake it a couple times.<p>One exam. One billion people. One standardized metric to determine who goes where.<p>There are flaws to this of course. The rich, with better access to tutoring and such, naturally have an advantage over the poor. But herein lies the benefit of such a system -- it is an explicit advantage. Everybody knows it. Everybody can see it. The path to obtain it is as clear as day -- "simply" have enough money. Similarly, the path to obtain success is clear -- succeed on the Gaokao (besides cheating, which is a whole other thing, and corruption, which is yet another thing).<p>People naturally stratify themselves in competition. When you eliminate standardized metrics to distinguish people, they will find other ways. Your friend has an internship opening that your kid can fill. Your boss lets your kid work under him. You know people who can help your kid get ahead. Meanwhile, the underprivileged are still pushed down, but in a much more subtle way. It is not scores that divides them and the privileged. It is connections -- and when you are a kid, these connections come from your family. And if you are poor, you do not have these connections. And unlike the singular exam, the path to obtaining these connections is not so clear.<p>Removing entry exam requirements does not help underprivileged students. It hurts them, but because it is a subtle hurt that ties to their family's place in society instead of a loud hurt like the cost of tutoring, people pretend it is somehow better. It is not. It is worse.