The standardized testing has to end. Teachers need to quit feeling the Sword of Damocles hanging over them dependent on student performance on a test that has almost zero oversight as of the content and their oversight.
The good ol' boy system of hiring administrators also has to end. It's resulted in substandard management of schools and personnel. While it can be helpful to know who you're working with, we've arrived at a situation where "who you know" takes precedence over merit almost every time.
The culture has to be addressed. The main issue here is this is a two way street. Communities and the school have become at odds with each other and frankly, both sides of the politics are to blame for this. Until this gets resolved, there's no hope for fixing the issue.