Disruptive innovations begin on the margins and don't penetrate the mainstream until their quality is proven to be as good, if not better, than more established models. Disruptive innovation is a term that was coined by Clayton Christensen and his colleagues back in the 1990s, and its effects have been seen in many sectors over the years, including education.

In today's episode of the LiberatED podcast, I talk with Michael B. Horn, chairman, co-founder, and a distinguished fellow at the Clayton Christensen Institute in Massachusetts. He has written several books on disruptive innovation in education, and his latest book, From Reopen To Reinvent: (Re)creating School for Every Child was just released this summer. Michael serves as an executive editor at Education Next and is a venture partner at NextGen Venture Partners.

Follow Michael on Twitter @michaelbhorn.