Sustainability education provides educators with the real-world applied learning models that connect science, technology, and math education with the broader human concerns of environmental, economic, and social systems. GEF provides curriculum and resources to K-12 students and teachers worldwide with the goal of challenging them to think holistically and critically about global environmental concerns and solutions. GEF Institute, a division of GEF, is a virtual classroom established to meet increasing market demand for sustainability focused courses. In addition to individual online courses, the Institute offers a professional certificate in sustainability concepts. All of the Institute's courses are available for professional development or academic credit.