In a classic picture of education, teachers create content to teach to students. It's hard work to create new content especially when someone has been on the job for a number of years. If Arduino as a platform (or something else) can help shift content creation partially to students (they have a lot of untapped brain cells), then this may change how teachers teach. One time I assigned an extra credit problem to my college students: to simulate cycloid motion, one of them created an android app. It was cool and correct. I have it on my phone. So every time I go over the same content, I show the app to my students as a demonstration. That student was not even a programmer. He got interested in app programming and my assignment gave him a goal and he achieved it. This is a lot better and easier on me than me trying to create one myself
Believe or not, ed colleges like the one in my university, stress a lot more over pedagogy than content. Our ed grads fail content exam to a point that their parents are complaining to the ed professors that their kids aren't getting jobs. I get the same complaints from ed students I interacted with. Trust me, these science ed majors don't know enough science to teach science. That could be a reason teachers hang on to old content even wrong ones. My state is considered as top 4-5 in US science engineering preparedness for college but I simply don't see it. Graduation requirement for high school is still geared towards finding a job as HS grad, not towards entering college. 1 year of physics or chemistry WILL be required in 2015 grads. Before then, it's OK to keep taking biology! I had 5 years of each, all required! That's from 3rd world country.
By the time these engineer-wannabes enter college without physics, it's too late. They could have done it in high school for free.