This info graphic is great. I'm sorry you cannot see it all here. It is persuasive in its simplicity. I would love for my children to attend a middle school or high school that uses flipped classrooms. It would take time to train students to do the right thing. Students would probably be more apt to watch a video on their phones than do paper and pencil homework. It is intriguing.
This link is to Challenged Based Learning: A Classroom Guide by Apple
Knowing that this "guide" is an advertising piece for Apple is why I only gave it only a cursory glance. I think we as a society should question who is pushing various technologies into the schools. I know first hand how problematic ipads can be in a classroom. I know the pain of constant updates and the relearning of "features" that did not need to be changed. For all the time that Apple has been pushing computers into classrooms you would think that they could make a tablet that is just for educational use. Any organization that has profits as their bottom line is not where I want to get my professional development from.
This link is to Challenge-Based Learning: An Approach for Our Time by The New Media Consortium
I was open minded when I first perused this paper. The New Media Consortium is a research group that includes universities, colleges, museums and research centers. This article looked at a pilot program for CBL in six high schools in six states. It made CBL/PBL seem more accessible. Having just a few teachers in a school pilot a program seems an appropriate beginning. All schools should have this opportunity. So many schools get left out of interesting research.