School bullying significantly impacts adolescent physical and mental development. The current study aimed to explore the effect of campus exclusion on school bullying behavior among junior high school students and the role of callous-unemotional traits and family caring. The Campus Exclusion Questionnaire, Olweus Child Bullying Questionnaire, Callous-Unemotional Trait Scale, and Family Caring Scale were completed by 705 students. A moderated mediation model was analyzed using SPSS 24.0. Results indicated that both campus exclusion and callous-u...