The international graduate school Helmholtz School for Data Science in Life, Earth and Energy (HDS-LEE) provides an interdisciplinary environment for training the next generation of data scientists in close contact with domain-specific knowledge and research. It is part of the newly established JARA Center for Simulation and Data Sciences, the German competence center for computing and data infrastructures, user support, and methodological and disciplinary research in simulation, data analysis, and high-performance computing technologies.