I agree with all of those problems and have been complaining about them for a decade, but I still don’t think it’s fair to jump to “No wonder 800 on Subject SATs is so common in Asia,” as the students I know and teach explicitly do not want to cheat and choose not to pursue that direction. I’m biased, of course, as I like them and admire their dedication, but I’ll stand up for them even as I acknowledge the problems in both the system and its execution in practice.