The Primary Mental Health Project (PMHP) is a research-based, selective program implemented by the Jefferson County Public Schools. The goal of the program is to enhance learning and other school-related competencies. Key structural components of the program include a focus on young children, early screening and selection, use of paraprofessionals to provide direct services to children, and ongoing program evaluation. A management-oriented evaluation approach was used in the evaluation of PMHP being used in 12 elementary schools. Both treatment and comparison groups were evenly distributed in terms of race and gender. The Teacher-Child Rating Scale was used as a pre- and post-test for the participating students in the treatment schools only. The central measures were related to task orientation, behavior control, assertiveness, and peer social. Statistically significant differences were found in the pre- and post-test analysis at the district and at the specific domain of behavior control. Gains were also noted at most of the individual schools. The analyses recommend use of a treatment versus comparison group pre-post-test design at the student level. (JDM)