Аннотация:The effectiveness of school counseling interventions is important in this era of evidence‐based practices. In this study, Meta‐Analysis 1 involved treatment‐control comparisons and Meta‐Analysis 2 involved pretest‐posttest differences. The overall average weighted effect size for school counseling interventions was .30. The study examined whether pertinent moderator variables influenced effect sizes. The pretest‐posttest effect size was not significant, so moderator analyses were conducted on treatment‐control comparisons. Analyses of moderator variables indicated school counseling program activities or interventions varied in effectiveness.