This study concerns the theory of decision making in curriculum related matters at the school level. It embraces variables such as decision making theory, the school as a social system, and curriculum models. Ethnographic methods were employed in a pilot study of school based curriculum decision making. The results of the pilot study lead to modification to the research methodology for the second stage of the study. The second stage included the role of consultancy in the full case study. The data collected is analysed giving rise to recommendations for further research in this area.