Less than adequate indoor air quality in schools can lead to a higher risk of health problems, an increase in student and teacher absenteeism, diminished learning, and even hazardous conditions. An indoor air quality program that addresses the planning, design, maintenance, and operation of public school buildings should be implemented at the earliest possible date in each local school system. This document provides guidelines to help local education staff responsible for construction planning, maintenance, and operation. Information is provided on the following: factors leading to the present concern about indoor air quality; the two types of air quality problems--the thermal environment and air contaminants; assessment of indoor air quality; establishment of a comprehensive facilities maintenance program; and building planning and design. Risks associated with specific activities are highlighted and control methods are described. Ten case studies illustrate typical examples of indoor air quality problems encountered in schools. The final section describes existing federal statutes and government activity. Two questionnaires (short form and extended form) pertain to the investigation of an indoor air quality problem. One figure and three tables are included. (LMI)