To understand the role of different school-wide practices in school-wide bullying prevention in the global context, this present study was guided by the social-ecological framework to examine cross-country similarities and differences in the association between three forms of school-wide practices (i.e., punitive, positive, and social and emotional learning [SEL] practices) and school-wide bullying between United States (n = 1,833) and Chinese (n = 1,627) teachers from middle and high schools. Measurement invariance tests confirmed that the associations between the three forms of school-wide practices and school-wide bullying were comparable across the two countries. Results of multilevel analyses suggested that more frequent positive practices at the between-school level were associated with increased school-wide bullying in the United States but decreased school-wide bullying in the Chinese. Also, more frequent punitive practices at the within-school level were associated with increased school-wide bullying in both the U.S. and Chinese samples, and this positive association between punitive practices and school-wide bullying was significantly stronger in the Chinese sample than in the U.S. sample. More frequent punitive practices at the between-school level were also associated with increased school-wide bullying in the U.S. sample, but not in the Chinese sample. Moreover, the frequent SEL practices at the within-school level were significantly associated with decreased school-wide bullying in the United States, but not in China; the frequent SEL practices at the between-school level were associated with decreased school-wide bullying in the United States but increased school-wide bullying in China. Implications for school-wide practices in bullying prevention and intervention with sociocultural considerations were discussed. (PsycInfo Database Record (c) 2024 APA, all rights reserved).