Four core principles should guide the professional development of teachers:
- Make sure that the teacher evaluation system has the capacity to drive professional development.
- Professional development should be structured as a collaborative effort by a group of teachers answering DuFour’s critical questions: what do we want students to learn, how will we know they’ve learned it, and what will we do if they don’t?
- Look as much as possible to the expertise, talent, and skills of teachers working with teachers as the most sustainable form of professional development.
- Use external consultants for new undertakings where internal expertise may be lacking, but have a plan for growing that expertise.