Conclusions about public school labor relations advanced in this report are based on analysis of data from a two-phase study. The first phase consisted of case studies conducted during entire collective bargaining cycles in eight school districts--four in Illinois and four in California. The second phase of the research expanded the work into 65 additional districts in the same 2 states, using interviews and surveys as the primary means of investigation. Approximately 240 persons were interviewed and a total of 1,038 usable questionnaires returned. The authors conclude that (1) public sector labor relations have changed the nature of school governance and the patterns of participation of lay persons in the schools; (2) three distinct generations and two highly conflict-ridden intergenerational periods exist in school labor relations; and (3) there have been important changes in school operations and in the nature of work within schools. The body of the report treats the concept of and evidence about the generational development of labor relations. The appendices include case study reports on each of the eight districts studied in the exploratory stage as well as a detailed methodological presentation on the second stage, including the instruments used. (Author/MLF)