You also need to disconnect school funding from local taxes. Currently schools in the US are primarily funded by local property tax, which means there are rich

You also need to disconnect school funding from local taxes. Currently schools in the US are primarily funded by local property tax, which means there are rich districts where the people are well-off, the property is valuable, and the schools are well-funded. Then there are poor districts where the people are poor, the property not worth much, and the schools badly funded. To get equity that funding setup has to change. Also you need to address poverty. Public schools are challenged with educating every child, but for the poorest the biggest barriers to education have nothing to do with what happens in the classroom. Without adequate food, good sleep, consistent home environment for study, school outcomes for the poor will always lag far behind. In many international measures where it appears the US has a schooling problem the underlying truth is the US has a poverty problem.