Teachers:    TREE also involves Teachers Re-energizing Environmental Education.  Teacher advisors are key components to the success of TREE Clubs because teachers can access district resources and get clearance for group activities.  TREE provides advisors and student leaders with the motivation and framework to connect with professionals and community & international resources.

Elders: community volunteers (especially retired professionals) who give their time and expertise to "adopt" TREE Branches and help them gain access to local resources and outdoor experiences.

Splinters:  Governmental agencies, businesses and non-profit organizations that are committed to help young people gain access to needed resources and to create sustainable communities.