If you haven't seen this yet...it is worth the 11 minutes. Dan Pink - RSA Animate
The book is pretty amazing. Autonomy is one of the best reasons to teach at an independent school. All of the standardizing that has taken place in the public schools has resulted in a great number of talented and self-motivated people leaving the profession to the detriment of our nation's children.
I'm thinking that only the complete implosion of public schools will return us to a place where teachers love teaching and kids love learning.