The implementation of evidence-based treatments in mental health services requires reliable and valid measurements to guide treatment. This study evaluated the efficiency of three caretaker-report measures of child psychiatric disorders. Data from 211 caregivers were used to assess the CBCL, the OHIO, and the SDQ. A scorecard methodology was implemented to determine the efficiency of each scale as compared to the DISC-IV. Across measures, the OHIO was optimal for assessing services need while the CBCL and SDQ provided better disorder-specific assessment. Results may improve clinical practice by providing an empirical approach to the selection of assessment tools.