It's hard to identify which practices are responsible for which outcomes. Suppose you wanted to combine the high happiness rate of Denmark with the low crime rate of Japan; how would you figure out which are the policies you need to accomplish that?
I mean, if I were designing a system to reinforce inequality in districts and schools, local property taxes would be first on my list of policies.
The real goal of education is to teach people how to think. Logic, rhetoric, analysis, scientific method, how to identify logical fallacies, understanding statistics, falsifiable theories, analyzing history not only through secondary sources, but actively seeking out primary sources to corroborate secondary sources, so on and so forth.
A useful education for a healthy well-functioning society is about inquiry, not regurgitation.