I cannot think of any single ethnocultural group in the West that highly values education and, at the same time, has bad outcomes doing so. We have invested a lot of money and effort into our educational systems.

Even traditionally oppressed groups like the Jews or the Chinese (Chinese Exclusion Act anyone?) or descendants of Russian muzhiks or Indian untouchable castes do have good outcomes if they actually motivate their kids to learn.

The groups that are systematically out (in Czechia, the part of the Roma that lives in ghettos - contrary what people tend to think, a lot of the Roma marry into the wider society, mix with it and live quite comfortable self-sufficient lives) tend to be the ones that despise schooling, and it will take a century or so of concerted efforts to change the attitudes.

Jews were motived to achieve because they were oppressed.

How do Indian low castes do compared to higher castes in the same country? They often continue to suffer from discrimination from higher castes in the west. I can believe they do better than some other groups, but how to they compare to higher caste Indians?