Drawing on ‘2018 Children and Youth Human Rights Survey’ data collected by the National Youth Policy Institute(NYPI), we explored the factors that are closely associated with adolescents experiences of acting in a discriminatory manner, and in the process delved in-depth into the relationship between academic achievement and discriminatory behaviors. To this end, analysis was conducted using zero-inflated negative binomial regression model(ZINB), which is suitable for investigating simultaneously factors related to the likelihood of perpetrating discriminatory behaviors and frequency of such behaviors. Results of logit analysis showed that adolescents school level, parental abuse, parental neglect, experiences of discrimination, human rights sensitivity, stress, and academic achievement were closely related to the likelihood of perpetrating discriminatory behaviors. A subsequent count model analysis exhibited that gender, school level, parental respect, teacher abuse, peer violence, experiences of discrimination, human rights sensitivity, stress, and academic achievement had much to do with the frequency of discriminatory behaviors. Specifically, a further analysis of the relationship between academic achievement and discriminatory behaviors revealed that the likelihood of never discriminating against other students was found to decrease linearly as the academic achievement level increased. It also turned out that repeated discriminatory behavior was mainly characteristic of students with high academic achievement. Based on the results, policy implications are briefly presented.