This set of papers presents five perspectives on the master teacher concept, each with a different orientation and set of assumptions guiding it: (1) "A Philosophic Look at 'Merit' and 'Mastery' in Teaching" (Maxine Greene); (2) "The School as a Workplace and the Master Teacher Concept" (Gary A. Griffin); (3) "Effective Teaching and the Concept of Master Teacher" (Walter Doyle); (4) "The Master Teacher as Curriculum Leader" (M. Frances Klein); and (5) "The Master Teacher Concept: Implications for Teacher Education" (Karen Kepler Zumwalt). (JD)