Architecture has the potential to reflect the cultural values of a society. Conversely, an expressive and didactic architecture can affect cultural value systems. At the most fundamental level, sustainability is about being aware of our place in a larger whole and respecting the interconnectivity all life shares on this planet. Without a cultural value system that supports this worldview, sustainable architecture will eventually reduce into a style or application. This thesis explores the didactic potential of architecture in regards to sustainability. It focuses on the recognition of unique characteristics in the built and natural environment of a place; the building's response to these environmental factors; and how an expressive architecture may teach the inhabitants of the building and local residents of the surrounding neighborhood about their environment. A secondary school in downtown San Francisco is an opportune typology for this exploration. Form may follow function, but can form inform?