A symposium for members of the International Network of Teacher Education Institutions was held at UNESCO Headquarters on 19 – 21 May 2010. Approximately 100 participants, who were teacher educators, representatives from ministries of education and UNESCO staff, attended. The participants, coming from 50 countries, met for a combination of professional development related to education for sustainable development and teacher education and to share experiences related to these two topics. The participants also discussed how to create and maintain national or regional networks of teacher education institutions that are working to reorient teacher education to address sustainability. The symposium was organized by the Section for DESD Coordination at UNESCO in collaboration with the UNESCO Chair on Reorienting Teacher Education to Address Sustainability at York University in Canada.