Child maltreatment is a phenomenon that poses significant difficulties for the individual, the family, and society as a whole. Research has revealed the deleterious effects of maltreatment on the organization of child development. Additionally, the long-term effects of maltreatment on adjustment have been documented. In this article, we present research on the effects of child maltreatment in various areas of functioning, including the development of secure attachment relationships, an autonomous self, peer relationships, and school adaptation. Implications of these results for educational settings and policy development are discussed. © 1989, SAGE Publications. All rights reserved.