An experimental investigation was attempted to examine the effectiveness of Anger Reversal Technique to manage anger among adolescent school students. One group pretest post-test experimental design was adopted. Speilberger's State Anger Scale was administered to assess the level of anger. A random sample of 50 male and 50 female adolescents were drawn from a selected higher secondary school located in Gondar Town, Ethiopia. Selected participants were randomly assigned to experimental and control groups. Anger reversal technique was administered for a period of 45 minutes/day for 45 consecutive days. A post test was conducted to ascertain the efficacy of anger reversal technique. Repeated measures ANOVA was worked out with SPSS 17 version. The result revealed that there is a significant decrease in the level of anger after anger reversal technique among adolescent students. Therefore, this intervention technique is effective in managing anger it can be adopted and employed to control anger among school students.