Improving teacher quality in America’s schools will take much time and hard work. You would have to start from the ground up, training new teachers from scratch based on partially lost knowledge. You would have to raise college admission standards and require four years of academic work in the teacher’s core subject.
Education degrees and teacher licensing, by the way, should be done away with. They are expensive and ineffective.
Any given school has limited resources. Limited number of classrooms, limited teachers, limited hours in a school day, etc. Sure these limits can change over time, but they will never not be limited.
It often is mutually exclusive because of these limits.
It really isn’t that demanding.