Objective: This study employed a pretest-posttest quasi-experimental design to evaluate the effectiveness of the Respected Parents & Respected Children(RPRC) parent education program developed for working mothers of dual-income families with young children. Methods: A total of 32 working mothers were randomly assigned to two groups, an intervention group (n = 16) and a control group (n = 16). Mothers in the intervention group participated in the parent education program. After the termination of the program, differences between the pretest and posttest in terms of mothers’parenting behaviors, parenting efficacy and parental role satisfaction were compared in both groups. Results: Mothers in the intervention group were significantly improved in their parenting behaviors and parenting efficacy, whereas mothers in the control group did not show any significant differences between pretest and posttest scores. However, there was no significant difference in parental role satisfaction between the intervention group and the control group. Conclusion/Implications: These findings suggest that RPRC parent education program is effective in bringing about positive changes in working mothers’parenting confidence, which can be crucial for the future developmental outcomes of their children.