This study explores conceptualisations of global citizenship education expressed by teachers and students in international schools. Using qualitative research, three schools were investigated in the Netherlands, Finland, and Australia. Data for this study was drawn from phenomenological interviews with secondary school students, teachers, and school leaders. The study's findings show that young people experience global citizenship through feelings of a global community, by participating in curriculum-based community service, within charity frameworks, but also in student activism. Teachers and school leaders displayed conceptual uncertainty of global citizenship education and tended to stay within their comfort zones. The article concludes that international schools could benefit from more social justice oriented approaches to global citizenship education.