When Bloomberg was mayor of NYC for 12 years, he had complete control of the public schools yet did not have any fresh ideas about how to improve them. He adopted every aspect of No Child Left Behind: high-stakes testing, closing schools, firing teachers and principals.His main idea was to hand schools over to private charter operators, who often excludes low-performing students to artificially boost test scores. Some kicked out kids who were in need of special services He hired another non-educator--Joel Klein be his chancellor, to adopt a corporate style of organization, because they had low regard for actual educators.So pleased was Bloomberg with his charter policy that it is now the centerpiece of his national education agenda.