"Public education is one of the cornerstones of American democracy. The public schools must accept everyone who appears at their doors, no matter their race, language, economic status, or disability. Like the huddled masses who arrived from Europe in years gone by, immigrants from across the world today turn to the public schools to learn what they need to know to become part of this society. The schools should be far better than they are now, but privatizing them is no solution."
The Myth of Private Schools - Diane Ravitch
An interesting, if older article, debunking some of the hype about charter schools in general and the ones featured in Waiting for Superman in particular.