The purpose of this study was to examine the mediating effect of school aged children’s covert narcissism on the relationship between the mother’s authoritarian style of parenting and the children’s academic stress. The subjects were 217 school aged children attending elementary schools in Gyeonggi Province. Questionnaires, which required self-report by children, were used to investigate their mother’s authoritarian parenting, school aged children’s covert narcissism and academic stress. The collected data were analyzed by Structural Equation Modeling(SEM) and Bootstrapping, by the use of AMOS 8.0, and SPSS 19.0. The results of our study were as follows. Structural Equation Modeling(SEM) revealed that school aged children’s covert narcissism partially mediated the relationship between their mother’s authoritarian style of parenting and the child’s level of academic stress. The mother’s authoritarian parenting was also found to have a direct effect on school aged children’s covert narcissism. Furthermore, the child’s covert narcissism had a direct effect on their own level of academic stress. Finally, the mother’s authoritarian style of parenting had an indirect effect on the children’s academic stress level when mediated by their covert narcissism. These results show that both mothers’ authoritarian style of parenting and covert narcissism of school aged children should be considered when attempting to understand the children’s academic stress. In particular, the results from this study reveal the important role of covert narcissism in decreasing children’s academic stress and buffering against the influence of negative parenting behavior.