THE DEVELOPMENT OF MENTAL HEALTH SERVICES IN THE PITTSBURGH PUBLIC SCHOOLS DURING 1965-66 IS REVIEWED. THE HISTORY, PHILOSOPHY, OBJECTIVES, AND PROGRAM COMPONENTS, INCLUDING INFORMATION ON STAFF, VARIETIES OF CLASSES PROVIDED, AND THE ACTIVITIES OF MENTAL HEALTH TEAMS ARE PRESENTED. THE ADJUSTMENT CLASSES AND RESOURCE ROOM FOR EMOTIONALLY DISTURBED CHILDREN ARE DESCRIBED AND COMPARED WITH RESPECT TO USES, OBJECTIVES, ELIGIBILITY CRITERIA, PHYSICAL FACILITIES, POPULATIONS SERVED, PROGRAMS, AND CLASSROOM METHODS. THE MENTAL HEALTH TEAM'S CONTRIBUTION TO THE OVERALL PROGRAM, INCLUDING SUCH ACTIVITIES AS PROGRAM PLANNING, EVALUATION OF CHILDREN, COOPERATION WITH COMMUNITY AGENCIES, TEACHER TRAINING, TEACHER CONSULTATION, AND SUGGESTION OF RESOURCE MODIFICATIONS IS DISCUSSED. ATTENTION IS CALLED TO FINDING, EVALUATION, RESEARCH, SCOPE, PREVENTIVE ASPECTS OF A MENTAL HEALTH PROGRAM, PREDELINQUENT SUBGROUPS, AND THE NEED FOR RESIDENTIAL FACILITIES TO PREVENT MORE SERIOUS PROBLEMS. DIRECTIONS FOR FURTHER RESEARCH ARE NOTED. EIGHT REFERENCES ARE GIVEN. THE APPENDIXES PROVIDE CASE STUDIES OF CHILDREN SERVED IN THE ADJUSTMENT CLASSES AND RESOURCE ROOMS AND NARRATIVE REPORTS OF OBSERVATIONAL VISTS TO ADJUSTMENT CLASSES. (JW)