Internationalisation of teacher training is a major challenge in the 21st century. For universities, university colleges and schools, internationalisation is now more important than ever. This publication considers a variety of perspectives related to internationalisation and explores aspects such as diversity, globalisation, interculturality, multilingualism, political education, and in particular, sustainable development. This publication presents 22 diverse contributions. Nevertheless, the contributions share a common base: They all refer to teacher education, sustainability and challenges of educational interest for the advancement of internationalisation in education.