Keyword: Implementation research between intervention and transfer in the context of multilingualism and language education

Starting from the distinction between a broad and a narrow implementation concept according to Schrader et al. (2020), this article gives an overview of the state of implementation research on language education with a focus on multilingualism. To this end, a systematic approach to understanding implementation research will be presented first, followed by a description of the two large nationwide programmes in the field of language education in Germany-ForMig and BiSS-in order to trace the development process of research into the implementation of language education measures. Subsequently, further current studies on language education and promotion at elementary level are reviewed and-as an exemplary view of international research on the implementation of multilingual education-results on the approach of translanguaging will be presented. The article concludes with a summary of current implementation research on language education and multilingualism on the basis of recapitulatory theses on the structure and conditions for success of implementation in language education.