The new course “Sustainability Education,” developed by the Teacher Education for a Future in Flux (teff) academy in collaboration with the Center for Teacher Education at the University of Cologne, provides all interested teachers, teacher training students, and other students with knowledge and skills related to education for sustainability. The digital learning module introduces participants to different sustainability concepts, reflects on various approaches to sustainability education, and concludes with the implementation of what has been learned in their own teaching practice. The course is divided into three different modules, each dealing with a different sustainability topic in the context of teacher education and teaching practice.