Simplistically saying that this specific case is an example for everything is naive, yet what could St Benedicts do with over $25k a year? That is what inner city schools are getting.
This is the promise of properly run charter schools. Some are successful some aren't but doing the same thing over and over again isn't the answer either.
I don't think this is about charter schools, so much as what happens with the private sector backs charitable entities with a proven, strong focus. Plenty of private schools are garbage. Based on the piece, St. Benedicts has a tried and true method.