In fact, in impoverished areas probably the most important thing to do to improve educational outcomes after establishing a school at all isn't better schools but simply money at home - teachers are only responsible for 35% or so of the educational outcome of an aggregate population while something as simple as ensuring a child has reliable sources of meals and that the meals are with family is _way_ more important it turns out (insert correlation / causation caveats).
As such, my suggestion isn't to spend more money on schools in low performing areas but to direct funding toward better home lives for students in the districts essentially. What good is spending $100k on better teachers and equipment when the students are living in trailer parks with abusive parents that don't feed them properly? This is a problem _many_ teachers in low-opportunity areas have talked about as one of the top problems for them.
I used to support charter schools conceptually until I understood that the funding mechanisms cause a zero-sum game problem which takes funding away from schools that could use funding that would do better. At this time I'm convinced that almost any policy in education or health will fail without addressing the massive harms of large scale poverty in a capitalist system.