Constant skill-and-drill/test-prep does not work. However, it has been the basis of the US school system ever since the passage of NCLB in 2001. I always did well on tests, because I could always "figure it out" even if I had never seen the content before. This is because I have always been a critical and abstract thinker. What these government mandates do is strip teachers and students of the ability to cultivate critical and abstract thought. Common Core, they said, would give kids analytical skills, but it actually does quite the opposite, as it gives teachers and students more bullshyt standards to follow. The more you try to drill the standards into the kids, the weaker they become. This is because if they get a test question they haven't been drilled on, they have no idea wtf to do. Whereas, if you put any test in front of a critical thinker, he or she will find a way to get SOMETHING right. Abstract thought is discouraged in school, and low-key a huge reason why melanated children are doing terribly.