"The project ""LADECI – Language Acquisition within Democratic Citizenship Education"" has developed an in-service teacher training programme that combines methodological insights on language instruction and promotion and education for democratic citizenship in order to qualify in-service teachers to foster their students’ effective language acquisition while raising their awareness towards democratic values and processes at the same time. The project is an important contribution to the qualification of in-service teachers who have to organize their daily professional life in a world prone to continuous change and further differentiation which permanently generates new and altered contents to be approached in modified ways. Teachers need to be provided with support and advice to keep flexible and open towards this complex reality in order to create learning arrangements that allow their students to recognize this reality and, even more important, to participate in it. In times of globalization, which can be mainly characterized by movement, a great deal of which is actual migration of people for diverse reasons, teachers face many new challenges when dealing with heterogeneous, multilingual and multicultural target groups. Their major aim must be to realize successful inclusion of all their students into the teaching and learning processes and into school life. This also means that obstacles impeding inclusion have to be overcome. By providing an in-service teacher training programme that fosters language promotion, the LADECI-project focuses on helping to remove one of the most fundamental such obstacle, namely the one that many students have severe disadvantages since they do not know or speak the language of academic instruction of a certain country well enough to follow the lessons offered by this very same academic instruction. They do not have equal opportunities to make achievements but have much more difficulties to make a certain school career leading to an appropriate and successful professional career later on. The project provides in-service teachers with means to reduce this disparity by offering didactic clues, guidelines and material with the help of which the linguistic performance of students can be considerably improved. Embedding learning arrangements in education for democratic citizenship at the same time can make an important impact on equity and social cohesion. The complex world we all face can sometimes be felt as too much to be taken in. Easy explanations and short-term solutions may be desired, but they are often one-sided or partial. If teachers enable their students to speak up and discuss, to negotiate and balance whatever they perceive and how they see their peers and people around in particular, and to come up with more intricate answers that will not always be complete ones, they can have a hand in the development of a reflective, self-responsible and open future generation and thus in real sustainability. The LADECI training programme – properly implemented in school’s individual in-service training concepts is an important milestone on our way there."