Conclusions and implications: The surveys, focus groups, and interviews with master teachers contain references to the importance of:
Using Mangin's (2007) theory of distributed leadership, principals can support teacher leaders by recognizing the different roles and skill sets they possess, including leadership experience and preferences, whether teaching adults or working directly with students. Wenger's (2002) critical success factors for communities of practice speak to the interrelationships among teacher leaders, school site leadership or principals, district leaders, and university content experts. To sustain professional learning communities, each of these entities must cooperate, coordinate, and collaborate.