Twenty-eight preschoolers with behavioral difficulties (aggression, hyperactivity, impulsivity, and inattention) in a North Carolina Head Start program received an individualized intervention based on the family-centered system of care approach. Interventions included: (1) individual and classroom-based behavior management; (2) on site consultation and teacher training; (3) social skills training; (4) parent behavior management training; (5) family support; and (6) coordinated formal and informal community-based services. Parents and teachers reported decreases in disruptive behaviors, whereas parents of similar children not receiving the intervention reported that disruptive behaviors remained stable or worsened over time. Teachers reported increased confidence in working with children and families and increased knowledge and use of positive proactive behavior management strategies. Families also reported satisfaction with services received. However, no significant differences were noted in other family measures of parenting stress, parenting competence, or family support possibly due to the multiple family risk factors characteristic of the group. (Contains 21 references.) (DB)