Great idea! Try to look to the International Association of Waste Management or something similar, based in Brussels, who advocate on these issues and which also holds on a group of associations who work on waste management
Congrats for your initiative! I am conducting a similar project in Romania and from our experience, a greater impact on the families` education and understanding is when you organize cooking classes, involving both the parents and children. Some of them may wish to feed better their families, but they simply lack of imagination, creativity or knowledge.