This report presents a synthesis of studies on the present situation and emerging policies of the Inservice Education and Training of Teachers (INSET) Project, developed collaboratively by members of the Organisations for Economic Cooperation and Development (OECD). The project achieved a broad dissemination of national practices and experience, enabling comparative analyses on an international scale. This report draws upon documents and papers from several OECD member countries: Australia, Canada, France, Germany, Switzerland, Japan, Netherlands, Sweden, United Kingdom, United States, and Italy. Chapter one provides an introduction and description of the INSET Project. The importance and scope of INSET is discussed in chapter two. Chapter three deals with teachers' characteristics and INSET needs. The fourth chapter considers the role of the school in inservice programs. Chapter five discusses the training of INSET trainers. The sixth chapter covers the cost, finances, and resources of and for INSET, and evaluation techniques and policies for INSET are described in chapter seven. Evidences of effective INSET activities are cited and discussed in chapter eight. Main conclusions on the INSET Project and their implications for policy and research are considered in the ninth chapter. The tenth chapter offers a framework for the development of new policies. The bibliography in the eleventh chapter cites contributors to the report by name and title. A chart is presented illustrating the structure and content of the INSET Project. (JD)