Where would a question about the education system itself be on-topic?
No public SE sites seem to support the topic. Maybe there's a proposal on Area 51?
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I don't know of any SE sites that cover education as a whole, but Academia SE (which usually focuses on graduate/PhD-level education) and MathEducators SE definitely cover parts of it. I also see Area51 proposals for Science Educators and Pedagogy (which is expected to cover "lower" levels of education than Academia SE). If you have a question that isn't covered by any of those, then it might be worth making a new Area51 proposal.