By Matthew Yglesias:

I used to think that cost inflation in higher education was driven by a lack of productivity improvements. Therefore, I thought, when people invented productivity-enhancing technologies that made undergraduate education cheaper, we’d be on the road to curbing cost inflation. Then I read this eye-opening article by Kevin Carey in The Washington Monthly. Kevin points out that we actually have seen a bunch of things like Aplia that are making aspects of undergrad education more efficient. They’re just not making it any cheaper for students and their parents