Prepared by the Environmental Protection Agency (EPA), this document provides information on many environmental hazards young children may be exposed to today in school buildings. Topics discussed include: (1) the definition, location, and health hazards of asbestos as well as responsible management practices, current legal requirements, and federal assistance related to assessing and managing asbestos in schools; (2) background information and causes of poor indoor air quality as well as related federal legislation and strategies for controlling the quality of indoor air; (3) the prevalence and health hazards of radon as well as measures being taken to address the problem and assistance available to schools; (4) some origins and health hazards of lead in drinking water, related federal actions such as the Lead Contamination Control Act of 1988, a three-step program to identify and remedy lead contamination in the school, remedial options, and control measures; and (5) recommendations for monitoring school-operated water systems and information on obtaining water sample analyses. A comprehensive list of state contacts is also provided, and information on other environmental concerns that may be apparent in schools such as underground storage tanks, recycling efforts, pesticides, and polychlorinated biphenyl is included. (CLA)