Green School Bali 7-8 Class- What We Know… Building a Bamboo Clubhouse. Green School, John's Green World - May 21, 2009 Green School Bali 7-8 Class. What we know… Building a bamboo clubhouse. View more presentations from johnbali. Green School Bali 7-8 Class. What we know… Building a bamboo clubhouse. View more presentations from John Hardy bamboo bamboo clubhouse building with bamboo Grade 7 Share on: