I recently published a four-part look at charter schools in California, which can be summed up by the title of the first piece: “How messed up is California’s charter school sector? You won’t believe how much.” The author, Carol Burris, a former award-winning New York high school principal who is now executive director of the advocacy group Network for Public Education, documented problems with accountability and transparency with some charter operations in the state. Now a new report details another problem with those schools.