What galvanized standardized testing’s opt-out movement

Aired: 5/26/2015 | 0:07:15 | Clip
As the school year draws to a close, many students are taking standardized tests tied to the Common Core. But in some communities there has been a strong backlash, with parents deciding to opt out of having their children participate. The NewsHour’s William Brangham talks to special correspondent for education John Merrow and Motoko Rich of The New York Times.