Fifty-one research studies are summarized in this report and the supplement to it. These studies concern the effectiveness of various aspects of the school program. The studies are classified by area of inquiry and level of research. Areas of inquiry are study of needs, curriculum development, child study, data processing, organizational projects, pupil placement, staff education, and use of lay personnel. Levels of research are research with equated groups, research with equated groups and an opinionnaire, objective statistical study, objective statistical study and an opinionnaire, and opinionnaire. (KM)