But they don’t answer the question of the role schools play in social development. There is also the question of how to effectively test students outside a supervised exam - online makes cheating plenty easier. And last is how to replace classroom labs which require special equipment. These are not impossible tasks for MOOCs to account for but all that I think these courses have only shown compelling methods of providing instruction and information on-demand and the ability to replay this instruction. School is a lot more than that.