Over the past 20 years, both charter schools and pre-kindergarten education have taken on increasingly prominent roles in the schooling of America's children. Charter schools in 43 states now serve more than 2.6 million students--roughly six percent of all students attending public schools. More than two-thirds of four-year-olds attend some form…

In dozens of U.S. cities, more than one in five students now attend charter schools. Charter school expansion has fueled an increasingly energetic discussion among advocates: How large a share of urban schools should be charters? Is the ideal New Orleans, where nearly all public schools are charter schools? Or does that create demands on charters…

Recently, two separate studies--one by Alan Ginsburg, a former director of Policy and Program Studies in the U.S. Department of Education, the other by a committee constituted by the National Research Council (NRC)--have sought to discredit the work of Michelle Rhee, former chancellor of schools for the District of Columbia. According to Ginsburg,…