The Woarani of the Pastaza Province in Amazonian Ecuador face complex pressures both externally and internally to develop. While there are both positive and negative impacts associated with this transition, it remains a problem that development solutions designed external to the system they’re meant to impact risk imposing asymmetries on that system. This research explores the case of a culturally and historically embedded boundary organization operating at the nexus between Western academics and two communities of Woarani in the Pastaza Province of Ecuador. Through unstructured and semi-structured interviews, field- observation and social and historical research, this study seeks to understand: 1) the pathways to development for the Waorani, what and why they choose what they do and, 2) in the context of the I-W boundary at the field school site, the elements of development that are critical for sustainable scaling. Key findings include eight elements that explain development at the field school and situate the school as a boundary organization. Another important finding is the support for sustainable scaling, that in this context, sustainable scaling is modeled by organic growth along known networks of relations.