Many of these are not laboratories of innovation testing methods that could be applied to public schools. They are chains taking money from the states in which they operate.

Read more here: https://schoolfinance101.wordpress.com/2015/12/07/picture-post-week-follow-up-on-whos-running-americas-charter-schools/?utm_content=buffer0175a&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer