Tom Ultican teaches high school math and physics in California. He has watched the arrival of charter schools in his district with growing alarm.
https://tultican.wordpress.com/2016/10/01/charter-school-scourge-invading-sweetwater/
He knows that their growth is a result of political connections. Nothing they do is innovative. They duplicate existing administrations. They add nothing of value.
He concludes they are a scourge and a failed experiment. Their time has come and gone.
Diane Ravitch's blog 
One devastating facet attached to long years of test-score school “reform” has been that with the non-stop public demonization of teachers has come the funding-lucrative act of “fixing” these teachers — not the school buildings, nor the poverty which surrounds our nation’s lowest-income schools. In this act of “fixing” teachers, those who play the funding game attach an expanding number of middle management jobs to the process (all funded by philanthrocapitalist grants and government “poor-children” money) and then fill these jobs with non-teachers, or greenhorn teachers who have only been in the classroom for a couple of years. Coaches, facilitators, evaluators, supervisors, managers, test-organizers, test-assessors, quadrant personnel, middle hierarchy personnel…the list goes on and on.
When heroines like Diane Ravitch and Ciedie Aech are encouraging me, I am sure I am on the right side of this fight to save public education from the ravages of greed, arrogance and stupidity. It truly is a Howard Beale moment and time to say, “I’m mad as hell and I’m not going to take it anymore.”
I’m hearing from more and more teachers in smaller California districts stories like these, the stories we in Los Angeles and others in Oakland were telling ten years ago. It worked here. It’s saturated, so they’re taking their show on the road. Sweet Water, Santa Ana and beyond.
I hate to say it, but even laying out all the facts like this makes no difference. The whole point of the charter experiment is to transfer the public school system into private hands. It’s anything but an unintended consequence.
Taking a few days off to take my daughter camping. Ran into a lady who told of her daughter teaching at a NC charter. A nightmarish tale of broken promises, incompetent administration, and a young teacher who now feels that it would be impossible for any teacher to have children and hold down a teaching job. We have always depended on people like this young woman who really care. What are we doing?
Destroying public schools and transferring vast millions of dollars of public assets into private (or privately controlled) hands. THAT is what we are doing. And for those who embarked on this quest, it is all going quite swimmingly.
Poor urban areas were the initial beachhead for charter school invasions, because it was easier to mask the destructive results to the colonized district, but now that charter density is so great in many cities, Step Two is now underway: their spread to poor and working class rural areas and suburbs. That has always been part of the strategy.