I have been working at Green School for 7 and half years and would like to share what I’ve learnt, what I’ve experience at Green School around sustainability. As an Indonesian language teacher, I have an important role to connect the Green School High School students with local students in my village. I keep asking myself as one of Green school communities on my contribution to implement the sustainability concept out side the school. Indonesian language has big contribution to make it happen. Creating a collaboration during April service trips is the idea. So the high school students should be able to communicate properly in Indonesian before they do the service trip. In the class, all activities are connected by using sustainability compass and REAL principles. Both local students and Green School Students will get great experience and demonstrates the IRESPECT values in real situation.