This chapter, taken from a guide to designing, implementing, and evaluating instruction and services for students with disabilities, addresses the issue of teacher collaboration. It provides information about the nature of teacher collaboration, its role in relation to special education service delivery as well as other school trends, its advantages and disadvantages, its costs, and suggestions for fostering it. A list of 10 ways to create time for collaboration is provided. The chapter is designed to be independent of specific models for establishing programs that emphasize teacher collaboration. Rather, it is intended to act as a set of principles that can guide administrators in the design, implementation, and maintenance of models tailored to meet local needs. (Contains 36 references.) (JDD)