“…Studies using Korean student data classified students into three trajectories in the examination of victimization, delinquent peer association, peer delinquency, and bullying, respectively. Given the different foci of the classifications across these studies, the descriptions of three trajectory groups that emerged in each varies substantially; they are essentially non-comparable (Bax & Hlasny, 2019; Cho, 2021; Cho & Lacey, 2021; Cho, Lacey, & Kim, 2021). To our best knowledge, only one previous study using Korean student data examined trajectories of youth delinquency, with the authors separating the trajactories of male and female students for violent versus nonviolent delinquency.…”