A stress management program was evaluated in sixth-grade classes of an urban public and a suburban parochial school. Sample 1, from the urban public school, and Sample 2, from the suburban parochial school, received pre- and posttests, Sample 3, from the suburban parochial school, was divided into pretest-only and posttest-only groups. Six self-esteem and 1 each stress and social-skills children's self-ratings and 1 each teachers' ratings of children's overall stress management and stress measures were used. All 10 measures showed improvement in the Samples 1 and 2 independently. Findings in Sample 2 replicated the positive effects in Sample 1. In both sixth-grade classes, children's stress level (self- and teachers' ratings), children's social skills and self-esteem self-ratings, and teachers' ratings of children's stress management skills improved significantly. Sample 3 posttest-only group scores did not differ significantly from the posttest scores of Sample 1 and 2 children, Rival hypotheses (e.g., history, maturation, testing) appeared implausible, Results support using skills-oriented stress management programs in regular grade school classes.