Abstract
The degradation of ecosystems is threatening human health, particularly through the emergence of infectious diseases. To remedy this, the One Health approach, which recognises the interdependence of the health of humans, animals, and the environment, seems appropriate. Such an approach involves communication between different stakeholders, the co-construction of problems and solutions, and collective action. It radically changes the values and attitudes of these stakeholders, as well as the modes of evaluating the actions implemented. "Education for", particularly education for politics and sustainable development, can be mobilised to support such a change. The diagnostic phase of a regional education project in the Grands Causses (Aveyron) provides an opportunity to identify the values involved and the dispositions that are essential to any action in a complex context, such as critical thinking. Although the results obtained are promising, the size of the dataset and the methods used make it impossible to assess their epistemological scope. The methods need to be redefined before an aggregate index can be developed as a tool for evaluating One Health approaches.