Along with improving teaching and coaching of teachers, Wagner also looks at administrative competencies. Our school is still in the process of selecting a new principal, so this is something I have thought a lot about. We have had several meetings at our site discussing what we want in a principal and are in the process of putting together an interview panel. I agree with Wagner's list of administrator competencies, particularly a written School Improvement Plan, as we would have a better idea of principal's leadership style and whether it is a good fit for the school.
As for what happens when an educational team meets regularly to observe classrooms, discuss common practices, and look for solutions to problems, it is empowering and gives more control to the educator over their own learning, professional development that is needed, and "buy in" to the overall vision.