This chapter portrays an educational enrichment program called “One World” operating in the state of the Guerrero, Mexico, with the purpose of promoting Education for Sustainable Development at the pre-school level with an emphasis on Global Citizenship Education and the SDGs. Described as a successful partnership between innovative Mexican educators, who are from an education system with a commitment to civics education and educational reforms, and a global nonprofit organization, which is committed to using emerging communication technologies to build a global platform, One World is a program which seeks to develop global citizens who possess the knowledge, skills, and values of globally competent individuals and leaders. The authors first present the historical emergence of the program along with its core components and values, then provide sample stories of implementation, and finally evaluate the effectiveness of the program from the perspectives of the parents, teachers, and administrators from 13 different pre-school settings in Guerrero. In addition, they provide a case for national education systems for the freedom and bandwidth to experiment and innovate in a society where citizens are struggling to make sense of an increasingly complex world.