Charters are explicitly reductions in institutional legal accountability, and unlike public (charter or not) schools, the chief decision makers so released from accountability with private schools are not accountable by election, either.
These are a few examples from Los Angeles:
https://www.washingtonpost.com/education/2019/06/17/how-does...
https://patch.com/california/studiocity/la-charter-schools-f...
https://www.scpr.org/blogs/education/2013/04/05/13188/los-an...
Harper’s recently ran a pretty good piece on the matter, if anyone is interested in a longer-form skeptical perspective on charter schools and their lack of accountability:
https://harpers.org/archive/2019/11/the-k-12-takeover-charte...