Article in the New York Times

"Online education is a one-size-fits-all endeavor. It tends to be a monologue and not a real dialogue. The Internet teacher, even one who responds to students via e-mail, can never have the immediacy of contact that the teacher on the scene...

http://www.nytimes.com/2012/07/20/opinion/the-trouble-with-online-education.html?_r=1&