The Global Citizenship and multilingual competences (GCMC) toolkit is an Erasmus-project with partners in Austria, the United Kingdom, Netherlands, Italy, and Germany. These project partners create the GCMC toolkit and the teaching materials together. The project partners are supported by their associated partners and their teacher advisory board. The associated partners are researchers working at various universities around the world who offer their academic view on the materials. The teacher advisory board consists of practicing teachers from the partner countries who share their insights into teaching Global Citizenship and multilingualism.