This paper analyses one element of Shulman's (1987) categories of the teacher knowledge base - knowledge of educational contexts - in relation to the education of Queensland travelling show children. This knowledge includes three sets of interactions: the children's relationships on and off the show circuits, the children's interactions with their teachers, and the teachers' interactions with the children's parents and home tutors. The concepts of 'border crossing' (Giroux, 1990) and 'boundary maintenance' (Barth, 1969) underscore the importance of show children and their teachers being able to cross the boundaries between show life and formal schooling
