Why to oppose Mayoral Academies
While it's true that charter schools form a way to self-select into a more willing group of students, the author's assumption is that those left behind will be less well served. She does not explain why that would happen. Although she argues that separation does help, she does not explain why public schools will not offer the same separation. She does not argue that Achievemnt First does not work. She does not argue that some public school are failing. She offers no solution other than the supporters of Achievement First should be putting their efforts into public schools.
OK. Separate kids by willingness to work hard. Offer them a more rigorous curriculum.