With the existence of 67 monographs and approximately 60 practitioners trained in action research in the western and central parts of Pennsylvania from project years 1995-98, the 1998-99 Section 353 project expanded the action research network (ARN) to include teachers, administrators, and researchers in the northeastern and southeastern parts of the state. The project produced a revision of the monograph guidelines and the Action Research Planner (ARP); trained 23 participants over the approximately 8-month research period; continued the refinement of the proposal review process to allow expert input to project proposal designs in order to improve quality control; produced 23 research monographs; and developed the Learning from Practice Web page (http://www.learningfrompractice.org). Interviews with 15 of 20 1997-98 participants one year after the completion of their project activities found: the majority improved their problem solving strategies; dealt with problems more systematically; made lasting changes in their classrooms; and felt action research made changes in their agencies. Interviews with 10 of 16 supervisors of participants' programs found that they rated action research highly, and a majority pointed to lasting changes in their institutions/programs as a result of action research. The 8-page report is followed by a list of 1998-99 monograph titles, the results of evaluation studies of the Pennsylvania ARN, and revisions to the ARP and Monograph Guide. (Contains 53 references.) (YLB)