There is currently a well-established belief among politicians, scholars and university representatives that educational systems can produce positive attitudes towards sustainable development (SD) among citizens. This article investigates whether Education for Sustainable Development (ESD) in teacher education has effects on pre-service teachers' perceptions of how to teach pupils about SD. The results from a panel study on the effects of a course on SD held at the University of Gothenburg (n = 323) is presented. The surveys consisted of questions about pre-service teachers' approach to teaching about SD. The study included a control group (n = 97). The results indicate a short-term effect among the pre-service teachers towards actively getting pupils to discuss issues concerning the environment but without influencing their opinions about it. The paper concludes by discussing the implications of the results for the idea of ESD in teacher training programmes.