Reuven Kahane's code of informality, which identifies and defines eight “internal structural components,” provides one of the few theoretical guides in the field of informal education. As a contribution to the development of a theoretical basis for empirical studies in this field, we wanted to uncover the underlying structural organization of these internal structural components. In a multidimensional analysis of Kahane's data, we found this structure of Kahane's eight components of informality along two axes. The first represents objects to which the structural components are applied: group, content, and activities. The second axis illustrates the components’expected impact–a process beginning with identification, moving through experimentation, and culminating in commitment. The process of experimentation represents a major contribution to the field on Kahane's part and is especially relevant to an understanding of education in a “postmodern” era. However, we found two gaps in the structure, possibly indicating missing components. Further analysis suggests that three of the components (modularity, pragmatic symbolism, and voluntarism) form a foundation of this structure and may be the minimal requirements for an understanding of informal activities and organizations.