This document discusses a study that compared levels of anger, aggression, and bullying among adolescents with different levels of self-esteem. The study used Rosenberg's Self-Esteem Scale and the Buss & Perry Aggression Questionnaire to measure self-esteem, anger, aggression, and experiences of bullying in 575 adolescents. Results showed that adolescents with the lowest self-esteem scored higher on measures of physical aggression, anger, hostility, and being victims of bullying, particularly among girls. Boys with the lowest self-esteem also scored higher on anger and hostility. The findings suggest addressing issues of anger, hostility, bullying, and self-esteem should be a focus of educational and counseling programs for adolescents.