Public education work in a lot of country (see for example most European country). Teacher also tend to be heavily unionised in other country, as well as having

Public education work in a lot of country (see for example most European country). Teacher also tend to be heavily unionised in other country, as well as having a tendency to be more left-leaning (but that is a veeeryyy big generalization). The issue is not the public education, teacher or union, it's the U.S government(s?) lack of incentive to actually care about those services.