Major aims of the ERASMUS+ project Developing Teaching Competencies for Extensive Reading Programs (LEELU) are to raise foreign language reading competencies of high-schools students and to test and improve a model of experience-based, cooperative and encompassing foreign language teacher education. LEELU’s starting point for pursuing these goals in innovative teacher education are the rather unsatisfactory reading habits and reading competencies of many European high-school students. Using the example of German as a Foreign Language, LEELU will contribute to an increase of foreign language and reading levels of such students as well as promote a practical model for the local and international cooperation of student teachers and experienced teachers in digitally-enhanced networks.These are the most important targeted results of the LEELU-project for the European public:(1) a concept for an extensive reading program in grade 10, illustrated for the teaching of German as a Foreign Language and easily transferable to other foreign language and multilingualism-oriented classrooms;(2) a validated list of book titles for extensive reading programs in German as a foreign language;(3) an innovative model for teacher education that has been implemented in three European countries fostering the video-based cooperation of novice and expert teachers from different local schools and different countries in digital networks;(4) results of a quantitative and qualitative evaluation of the LEELU model to contribute to the improvement of theories of (foreign) language reading programs and teacher education;(5) public conferences in Hungary, Italy and the Netherlands to promote the LEELU project results; (6) a digital network for the video-based cooperation of student teachers and experienced teachers of German as a Foreign Language in Europe and beyond with the potential for transfer to any other subject domain.LEELU focuses on experience-based learning of teachers who locally cooperate in tandems of novices and experts in implementing an extensive reading program of German as a Foreign Language in grade 10. These tandems videotape their classrooms and cooperatively choose segments for professionally moderated discussions with both local colleagues and – using the digital environment itslearning – international colleagues from two partner countries.LEELU evaluates this innovative model of teacher education on the basis of longitudinal data on foreign language competencies (tests) as well as on reading motivation and attitudes towards reading (questionnaires) of Dutch, Italian and Hungarian learners. Their teachers’ ratings of the practicability and the efficacy of both the reading program and the teacher education model will be gathered by means of questionnaires and group discussions. On the basis of this empirical data, the concepts for extensive reading and for expererience-based, encompassing teacher education will be improved in terms of robustness and practicability in order to be transferable to other European contexts.