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This also explains why education is not a central focus of many govts these days
Can you elaborate on what you mean by this? Are you suggesting governments do not manage, control, and fund government education in many governments? Where is the state not involved in education (other than extremely poor nations)?
The states I have in mind still do manage school, regulate educational systems, even rule what children are taught, what books are allowed, often terribly outdated stuff. But government education is very underfunded there. If you look at European states from the postsoviet block, education didn’t change much from that time. And there is no interest in changing that on the state level.