HN tends to filter for people who are more academically inclined; people for who mastering a topic is a goal, and believe that education systems should support that.

Taking a wider view, this is not really something that society wants in a widespread system; mandatory education systems do two things: They provide a minimum skill level; and they filter people into groups based on whether or not they can pass some bar. Better outcomes for more spending only really becomes a topic where the minimum bar is not being met.

Education systems/techniques set up for effectiveness first do exist, but typically in spaces where there is a need for an individual to obtain a specific skill (military education, employer training in high demand and skill areas, private tutoring).