“…Considering the magnitude of school's influence on school-aged children [4], school adjustment can be a significant factor affecting children's quality of life and even lifestyle factors, such as health behaviors. However, multicultural children may have difficulties making friends of their own age due to their exotic appearance, language problems, or underachievement in school, and they are therefore susceptible to difficulties in school adjustment, including experiences of psychological problems, refusal to attend school due to bullying [15], and timidity stemming from a sense of repulsion, humiliation, and isolation due to their unusual family environment, which is different from that of their peers [17]. In a large-scale longitudinal study of 3,808 first-grade elementary students in Korea [18], peer relationships showed significant correlations with scores on the Child Behavior Checklist, which is used to evaluate children's social adjustment, emotion, and behavioral problems, as well as with emotional and behavioral problems measured using the Youth Self Report in early adolescence (13~15 years of age).…”