I found this an interesting presentation on what it is that really gets people to engage in their job/career/vocation. According to this the three main motivating elements are:
1. Being challenged - able to be self directed
2. Mastery - getting better at stuff
3. Making a Contribution - making the world a little bit better!
The majority of people want to feel that they are part of something meaningful. I believe this is a key element for the majority of those involved in education and why our job is described as having a large vocation element rather than it being just a career.
I believe this ties in with the Simon Sinek TED talk blogged about below that examples the difference in businesses / schools that work on the 'WHY' before the 'HOW' and the 'WHAT'. People believe if the direction is passionately shared?!? Buy in follows??