The purpose of the study was to compare the self-esteem between normal and abnormal school boys. To achieve the purpose of the study, twenty (n=20) school boys as normal boys from St. Mary’s Higher Secondary School, Pothakalanvilai and twenty (n=20) school boys as abnormal boys from Deaf and Dumb Higher Secondary School, Thirumaraiyur were selected as subjects. The age category of the subjects was under 19. Self-esteem was selected as dependent variable for this study and it was measured through Rosenberg Self-Esteem Scale which was developed by Rosenberg, during the year 1965. Independent randomized research design was used for this study, as the subjects were selected randomly from two independent groups’ normal and abnormal school boys. The collected data were subjected to statistical treatment to find out any differences between the groups in the dependent variable selected by using independent‘t’ test. The level of significance will be fixing at .05 level confidences for all the cases. It was concluded that, there is no significant difference between normal and abnormal school boys on self-esteem. However abnormal School boys have high degree of self-esteem when compared to normal school boys.