MaSDiV (2017-2020) is a high-level research and evaluation project involving leading mathematics and science education institutes from across Europe and 11 ministries of education. The MaSDiV partners will develop and implement a professional development course for mathematics and science teachers to better equip them to promote science and mathematics literacy for all students (including disadvantaged students from diverse cultural and social backgrounds) together with the learning of fundamental values in multicultural settings. Further, we will rigorously evaluate this course using a multimethod research design. In this policy experimentation measure (funded within Erasmus+ Key Action 3), the aim is to scale-up successful measures across Europe.