Studies have shown that the School Kindness Scale (SKS) has adequate psychometric properties in different societies such as Canada, Turkey, and the Philippines. However, there is scarce evidence on the psychometric validity of this scale across multiple societies and educational contexts. This study explores the cross-national invariance of the SKS among high school students in the Philippines, Hong Kong, and mainland China. Results showed that the modified unidimensional model of school kindness with correlated error terms on item number 2 and 3 had the most optimal fit. There was evidence supporting partial invariance of the modified unidimensional model of school kindness across setting and year level, and full invariance across gender. Whereas school kindness also demonstrated positive correlations with perceived academic performance in Hong Kong and mainland China, this construct was linked to higher emotional and social engagement in math in all contexts. Copyright © 2022 Wiley Periodicals LLC.

This study explored the associations between secondary school students' sense of school belonging, their perceptions of school kindness, and character strength of kindness, and examined possible differences in these constructs across gender groups. The study, which included 1973 Hong Kong secondary school students, revealed that students' sense of school belonging was positively correlated with their perceptions of school kindness at the school and student levels (0.021 and 0.185, respectively). Furthermore, students' sense of school belonging was positively linked to character strength of kindness at the student level, although this relationship was found to be non-significant at the school level. At both levels of analysis, the positive relationships between students' perceptions of school kindness and character strength of kindness were significant. In addition, girls reported higher levels of character strength of kindness than boys. The findings of this study provide a better understanding of the relationships between sense of school belonging, school kindness, and character strength of kindness. Implications for research are also discussed. Copyright © 2020 Society for the Study of School Psychology.