Charter schools are among the nation’s most segregated, an Associated Press analysis finds — an outcome at odds, critics say, with their goal of offering a better alternative to failing traditional public schools.

National enrollment data shows that charters are vastly over-represented among schools where minorities study in the most extreme racial isolation. As of school year 2014-2015, more than 1,000 of the nation’s 6,747 charter schools had minority enrollment of at least 99 percent, and the number has been rising steadily.

The problem: Those levels of segregation correspond with low achievement levels at schools of all kinds…

Read more at ABC News.