University and school-based members of the League of Professional Schools, a collaborative formed to support school renewal, engage in disciplined inquiry on the effects of this school/university collaborative on life in member schools. Essentially, the League conducts action research on action research. The League and its definition of schoolwide research are described. Some general tendencies that have been noted in the conduct of research among member schools are reviewed, as is support provided to members by the League. Successes and difficulties in the conduct of the League's research are reviewed, and reflections on the process are presented. Currently, the League includes 60 elementary and secondary schools, with university participation through the University of Georgia. The League is a network held together by common goals, among which are continued cycles of action research. An analysis of 47 action programs of member schools finds 4 areas of success in the collaborative efforts: (1) desirable process outcomes for staff; (2) desirable process outcomes for students; (3) desirable product outcomes for staff; and (4) desirable product outcomes for students. The League is aware that action research is hard work, but it is clear that member schools are recognizing its value and learning how to conduct it effectively. An appendix describes key activities and resources of the League. Contains 72 references. (SLD)