This paper explores how internationalization ideas in primary and lower secondary schools can be developed through the acquisition of international experience abroad by leaders. The study was inspired by existing literature on internationalization and leadership, and theories of experiential learning and reflection. Empirically, qualitative material was derived from a study of nineteen Danish school leaders participating in an eight-day delegation visit to China. This study shows that international experience for leaders can be used to develop ideas for internationalization at the school level through reflections of lived experiences, participation in meaningful activities, and active engagement in interaction with international and local colleagues. However, the realization of ideas depends on various elements, including leadership, teacher engagement, policy support, and financial support.