This paper looks at the ways in which the role of the teacher is expanding in schools across the country. The report also discusses the reasons behind such changes in the roles and responsibilities assigned to teachers and describes places where teachers are actually carrying out these expanded roles. The knowledge base which answers the question "Why expand the teacher's role?" is synthesized and implications are drawn for future operation of schools, school districts, and other educational agencies. This document is one of three publications making up the Pathways to Growth series, designed to assist school leaders in planning and implementing organizational growth in the schools. (LR)