In the past eight years, Chicago has created an excellent charter school model with help from across the city. Mayor Richard Daley supported the reform, Chicago Public Schools developed a thoughtful and proactive approval process, business and civic leaders championed the movement and provided technical support, and teachers and community groups…

In New York City and state, charter schools are slowly gaining momentum through performance that speaks for itself, and with quick action by authorizers and charter advocates when schools fail. But as the New York charter experience should demonstrate to districts and states nationwide, meeting the urgent need for systemwide improvement is far…