The Khan Academy: Distinguishing the App Store From the Apps - Rick Hess Straight Up - Education Week

http://blogs.edweek.org/edweek/rick_hess_straight_up/2012/08/the_khan_academy_distinguishing_the_app_store_from_the_apps.html

Rick Hess says just because the idea of Khan Academy is good, we can't ignore important details, like the quality of the lessons themselves. He calls for more involvement from curriculum experts and teachers. I doubt I'll ever read anything by Rick Hess that I agree with more.