This paper introduces the Garbage Can Model and uses the model to analyze some of Taiwan's educational policies and to examine some of its decision-making processes. The paper first briefly discusses three decision-making models on the basis of their degrees of rationality. Second, it describes the three major characteristics of an "organized anarchy," which is the target organization the model intends to study, and the four streams for making a decision in such an organization. The three characteristics are problematic preferences, unclear technology, and fluid participation. The four streams are problems, solutions, participants, and opportunities. Finally, a reflection on educational policy making in Taiwan is presented at the end of this paper.