International-mindedness is a strategy employed by international schools (IS) to create environments successfully promoting social justice, cultural diversity, and tolerance. The composition of the student body forces accommodation and assimilation of multiple cultures, backgrounds, and languages into one location or contact zone. The purpose of the study is to understand how IS navigate, manage, and lead educators and students from different races, genders, religions, and socioeconomic statuses by promoting equity and creating an environment with zero tolerance for discrimination. However, social justice gaps in education in general still exist, and practical applications and strategies to embrace diversity and equalize the marginalized are lacking. This chapter provides strategies as to how educators worldwide can benefit from approaches used by IS for social justice and tangible strategies used by IS to promote ethical-international-mindedness and decrease discrimination.