This report presents findings of a project that identified and examined three communities where schools have successfully reduced discipline problems and improved learning and behavior of all students, including those with disabilities. Site visits by a research team and expert panels (including both lay community members and professionals) were conducted as were six focus groups comprised of students, family members, general and special educators, administrators, school board members, and community agency representatives. The team visited: (1) Westerly, Rhode Island, where new leadership in the 1990s transformed a district with many civil rights violations into a model program for students who are receiving a continuum of supports and services for behavioral problems; (2) Polk and Hillsborough County school districts in South Florida, where Project ACHIEVE, a schoolwide prevention and early intervention program, targets students who are academically and socially at risk; and (3) Lane County, Oregon, where the school district has successfully implemented a schoolwide violence prevention curriculum. The report's first three sections provide background information. Major cross-site findings are presented in the fourth section and the report concludes with a set of underlying principles reflected in each of the programs and schools. Four appendices list participants, materials, agendas, and the focus group questions. (Contains 78 references.) (DB)