Educational linguistics lays at the interface of contributions from linguistics (in our case focused on L1) and education. It aims at teaching students in compulsory schooling how to engage in fruitful reflection when facing both language in use (especially in the written mode) and language as a system, approaching language as something worthwhile exploring and targeting the development of students’ encyclopaedic knowledge about it. In this context, the educational game can be seen as a process in which specific contents are made accessible to specific learners through mediation, which comprises well-articulated conceptual systems, as well as methodological procedures, directly provided by teachers in the classroom. Nonetheless, such mediation can indirectly be provided by other agents (curriculum theorists, linguists, material designers, etc.), and this is the focus of the papers in this special issue: the role of linguistics, teachers’ beliefs and preparedness, the role of grammar in the curriculum, the concepts of sentence, and the difficulties in linking grammar knowledge and knowledge on language use. The ulti- mate goal of this special issue is to contribute a common ground for a debate.