“Learning in an introductory physics MOOC”, an MIT paper…

“In summary, our MOOC produced significant and roughly equal learning for all of the cohorts differentiated along several axes”

So MOOCs work, at least for learning physics. Which is just as well. Since there are few other scalable ways to deliver advanced quality-assured and corruption-free education, for the brightest of the coming 2 billion people who are set to join the middle classes by 2030.