I like this idea. I use Arduino in my high school electronics course. I think it's a great way to introduce kids to programming and electronics. For the price it's hard to beat. My favorite part is watching the excitement in the beginning as students discover how to light up and sequence multiple LEDs. I love my job!
You can check my stuff out at http://electronics.flosscience.com
If you're so inclined you can also support my efforts to fund a teacher crated Arduino based high school textbook at:
http://www.kickstarter.com/projects/1713741390/arduino-in-education
Steve Dickie
Divine Child High School