I can tell you from experience that it doesn't work. It dumbs down everything and turns the majority into slackers. Our standards are so low, it's laughable. Most students just want a D- because they can graduate high school with a 60% average in every class, so why work harder than that? Why do you think anyone who can afford it puts his kid into private school where education is, by definition, EXCLUSIVE? I don't know how to fix it, but the system is broken (and I'm a teacher).