The charter school problem: Results are much less positive than a new study suggests

Diane Ravitch:

Charter schools are not a panacea for our education problems. The recent study by Caroline Hoxby of Stanford University concludes that disadvantaged students who attended charter schools in New York City for nine years, from kindergarten through eighth grade, can close most of what she calls the “Scarsdale-Harlem achievement gap.” Hoxby does not say how many students completed nine years in a charter school – a key detail, as the city had only about a dozen small charters in 2000.
The results are impressive, but they are not typical of charter schools across the nation.
Nationally there are about 4,600 charter schools enrolling 1.4 million students. They run the gamut from excellent to abysmal. Even their most ardent supporters recognize that they vary widely in quality. Chester Finn, whose Thomas B. Fordham Institute sponsors charter schools in Ohio, wrote, “Some of the best schools I’ve ever been in are charter schools, some of which are blowing the lid off test scores in such vexed communities as Boston, New York and Chicago. And some of the worst – and flakiest – schools I’ve ever been in are charter schools.”

Much more on Diane Ravitch here.