The Elementary School Success Profile (ESSP) is a multidimensional instrument for school-based practitioners that assesses the social environmental domains of neighborhood, school, friends, and family, as well as the well-being, behavior, and school performance of students in the third, fourth, and fifth grade. This article presents the psychometric properties of the computerized child self-report component of the ESSP--the ESSP for Children. Previously, extensive cognitive testing with children established that children's ESSP responses mean what the instrument's developers intended. In the present study, results of analyses of factor characteristics, internal consistency reliability, standard error of measurement/percentage of error, criterion-related validity, construct validity, and test-retest reliability indicate that the child questionnaire contains 12 factors in five domains with adequate to excellent psychometric qualities. Triangulated with data collected from the ESSP for Parents and the ESSP for Teachers, the data from the ESSP for Children provide information that is directly applicable to intervention planning by school staff.