[Excerpt] Society has high expectations for our educational system, and social science research should contribute to helping meet these expectations. Research on the choices that participants in the system make, and on the consequences of these choices, is particularly useful and often provides information that is directly relevant to the policy debate. Thus the four chapters in this volume all address the choices, and the consequences of choices, made by students, teachers, and school administrators. They are grouped together in this book in the belief that providing them this way will increase their influence on public policy.