Coopératives Jeunesse de Services (service youth cooperatives) is a training scheme that introduces young people to cooperative entrepreneurship. Imported from Quebec, the project has been running in Brittany since 2013. In an unusual partnership, the scheme brings together SSE economic organisations (cooperatives, regional SSE networks, CRESS, etc.) and educational organisations (community and youth educational programmes) to help young people between the ages of 16 to 18 create and develop a cooperative over the course of a summer. The article looks at the two groups’ views about the cooperatives and the relationships that form through their joint participation in the project. It appears that working in partnership enables them to deconstruct their biases and invent new ways of working together.