Understanding parenting style and its impact on the self-esteem of children has a paramount importance for the well being of children and their development. This study was conducted to look at the impact of parenting style on children‟s self-esteem in American Mission School. In addition, this study also sought to examine the relationship parenting style has with family characteristics and some demographic factors (age and grade). A total of 189 students from 4 grades were selected (7, 8, 9 & 11) randomly. Parental Authority Questionnaire (PAQ) and Rosenberg Self-esteem Scale (RSE) were used to measure parenting style and self-esteem respectively. Univariate and bivariate anyalysis were used to analyze the collected data. Findings showed that there was no significant correlation between parenting styles and self-esteem except fathers who practice authoritarian parenting styles. It was also found that there was significant relationship between age (one of the demographic factor) and self-esteem, while the other demographic factor grade didn‟t have a significant relationship with self-esteem. In the contrary, family characteristics (living arrangement, parent‟s level of education and income of the family) were found to have no significant relationship with self-esteem. Conclusion was made and the major finding was discussed in relation to other research findings. Finally the implication for social work education, research and practice was discussed