The purpose of this article is twofold: to discuss some current problems with curriculum design in physical education, and to offer some suggestions for model-based attempts to assist the process of implementing new curriculums. The process of curriculum implementation can be broken into two phases, the preoperational stage and the operational stage. Several issues within each of the two stages are discussed, for curriculum changes in general and specifically for physical education. The key elements in curriculum implementation are: support (material and human), change strategies, communication channels, staff development, and instructional planning. Each element has its own role to play in the process, and the lack of any single element will severely hinder the efficacy of the changes desired. The final section of the article presents a model of the curriculum change process as outlined in the text.