We report on the development and initial validation of the parent-report scale, "Management of Children's Behavior Scale" (MCBS), designed to evaluate parenting practices related to conduct problems in children. Children (N = 396, ages 2-14) referred for outpatient treatment and their parents served as participants. We evaluated the composition and consistency of the scale and provided evidence pertaining to concurrent, predictive, and incremental validity. Evidence for each type of validity was consistent with the conceptualization of the scale and the pertinence to child conduct problems. The measure also was sensitive to therapeutic changes. Parenting practices targeted in treatment (parent management training) improved as predicted over time. The results suggest the measure may be useful in evaluating parenting practices known to relate to conduct problems and often targeted for intervention in parent- and family-based treatment.