Early adolescence presents many challenges to youth, their parents, and educators. During these transition years, students experience physical, emotional, and educational transformations. The Scarborough school system in Ontario, Canada, conducted a study of the Ministry of Education's Transition Years pilot project in four of its schools. The Scarborough study had several objectives: describe the context of each of the pilot project sites in terms of demographics, organizational structures, and beliefs and attitudes of the school community and the community at large; document the Transition Years development phase in each site in relation to historical context, school culture, collaboration, staff development, leadership, planning, student participation, parental involvement, obstacles, and facilitators; summarize commonalities and differences; and measure individual concerns about change. Focused group interviews and questionnaires were used in the study. Chapters discuss the following topics: background and methodology of the Scarborough study, site profiles, collaboration, leadership, staff development, site planning, and finally, reflections on the concerns and restraints experienced by those involved in Year One of the project and suggestions for Year Two. Eight appendices include study questionnaires and site-level and system-level focused-interview topics. (Contains 50 references.) (JPT)