Abstract
This article is based on a study involving 126 International Baccalaureate (IB) teachers in more than 30 countries who, through the use of asynchronous online discussion forums, shared how they teach and simultaneously reflected upon how they conceptualize global citizenship. Data analysis revealed that participants developed new understandings about open-mindedness, interconnectedness, and cross-cultural learning experiences. Online data collection in educational research offers great opportunity for furthering professional development in global citizenship education.