We’ve heard a lot of success stories from charter school advocates as they’ve tried to gain support for them. But not all charter schools provide a good education and a leading charter school advocate is the first to admit that. In fact, he’s now pushing for states to close more charter schools. Greg Richmond is the director of the National Association of Charter School Authorizers. He says up to 1,300 charter schools in the country are failing their students, including a few in North Carolina.