The training school brings together PhD students and young career researchers working on intergovernmental coordination from different disciplinary angles and research questions. The training school covers conceptual distinctions, different types of coordination and their implications for questions of representation, legitimacy and accountability of decision-making, to methodological questions of measuring coordination for comparative research purposes. The school is being delivered by leading scholars of this COST Action from across Europe. Each session will be led by the teaching team, who will introduce the key conceptual terms and arguments of the debate. Participants will engage in discussion of issues and practical exercises of real-world scenarios of intergovernmental coordination, and have the opportunity to present and get feedback on their own research. The training school brings together young researchers from different disciplinary backgrounds with an interest in topics of intergovernmental coordination spanning from comparative research on policy problems and solutions involving coordination; practical examples of coordination problems and how they were managed or overcome by political actors; to the politics of coordination and normative questions of legitimacy and accountability of interdependent decision-making in multi-level contexts. Each participant will give a paper presentation about their own research project as part of the training school.