In the last 20 years, interest in the field of extended education has been growing worldwide. Countries in the East and the West have been investing in developing systems to support student learning after traditional school hours. In this contribution, we first clarify concepts and terms currently used in Switzerland and then, from an international point of view, focus on possible useful terms in this new field in English. In the third part, we attempt to outline the field of extended education by means of basic points, illustrated using Switzerland as an example.