Based on central results of a project funded by the Federal Ministry of Education and Research, this publication shows how vocational education and training for sustainable development (VETSD) can be measured and how corresponding indicators can be determined in a theoretically and empirically sound manner. Using qualitative and quantitative research methods, promising starting points for measuring VETSD were first identified. From this, three indicators were derived, which were subjected to testing in practice due to their feasibility and expected informative value. The results of these tests are presented and discussed in the main part of this publication to show which steps can give the indicators even more precision and efficiency for prospective use.