The workshop was an activity for teachers of professional training. The aim of the session was exchange some best environmental practices of the GreeNET previously selected by the Ecoinstitut. First we presented the GreeNET project, the steps done and the steps we must to be done, emphasizing the role of the different school centers in Europe. Secondly we provided to teachers different materials related to Best Practices selected in GreeNET. Then the teachers had time to read 2 different best practices and work in pair to evaluate them. Finally, the participants had time to discuss the possibility to use these education materials in their school.