Justin Reich, a fellow at Harvard University’s Berkman Center for Internet and Society and the author of the EdTech Researcher blog on edweek.org, said he’s glad to see “pockets of people experimenting with these ideas.”

There’s little evidence that either strategy is effective, Mr. Reich said, though there appears to be more indication that extended learning time may hold promise. Often, blended learning and extended learning time are implemented along with other measures, and it’s difficult to tease out what may have had the most impact, he said.

via Schools Test Impact of Blending Technology, Longer School Days – Education Week.