Scalability is the issue, though, isn't it? Any number of esoteric pedagogical approaches have been tested, to great success, with the children of people wealth

Scalability is the issue, though, isn't it? Any number of esoteric pedagogical approaches have been tested, to great success, with the children of people wealthy enough to fulfill all of their scions' material needs and subsequently move onto purchasing immaterial things like "attention". You have to figure out something you can apply kids in spite of who their parents are. If not, you have to admit that there's no such thing as a meritocracy divorced from what the parents are willing or able to provide (which opens up questions of how much children deserve to have that deficit filled, it if happens to exist in any individual case).