I had great time today on Google's Think Education panel with Sal Khan, Esther Wojicki and Mike Hathorn talking about empowering the students of today.
All of us emphasized how important is for students being asked to teach as a method for learning. This can occur formally in the typical class structure or informally with students collaborating on a problem.
Personally I would add that technology instruction provides one of the best ways to start those conversations with students and teachers. This is something we've worked on extensively in my district, when a student can teach the teacher, everyone wins.