In increasingly multicultural societies, students with migration background, professional competences of teachers and linguistic ability challenge educational policy and the scientific system. Schools and education systems must therefore harness the benefits that students and teachers from diverse backgrounds bring to classrooms. A successful school system treats diversity as a source of potential growth rather than an inherent hindrance to student performance. To do so, universities need to assume their increasing responsibility when educating teachers. This book comprises contributions, which accelerate professionalism in the educational system by supporting scientific and in particular international exchanges.