Tim Cunningham is the Development Director at Triple A Learning. He has worked in international schools for 26 years. He discusses how Moodle communities of practice can help address the challenges of professional isolation experienced by educators in international schools. Two case studies are presented: 1) how a Moodle course was used to connect librarians from different schools, and 2) how workshops, mentoring groups, and shared content in Moodle are helping teachers obtain credentials. Communities of practice are defined as groups who share interests and deepen their knowledge through ongoing interaction.