The 198 teacher centers listed in this directory comprise a network of teacher center practitioners who communicate with the Teachers' Centers Exchange (Far West Laboratory for Educational Research and Development, San Francisco, California). Centers in the United States and Canada are listed alphabetically by state. Information on each center includes: the name of the director, hours of operation, program description, evaluation methods, resources, staff personnel, setting, participants, fees and academic credits, school/college affiliation, sources of financial support, decision making processes, origin, and information services offered by the center. (JD)