This article presents the participation of teachers and laymen in curriculum development. the literature in this field has been, and continues to be, extensive. Much of the writing thru 1945 consisted of descriptions of local practices in teacher and lay participation, or statements of theory which justified widespread participation form the standpoint of a democratic philosophy. A researcher suggested that the values of cooperative planning is a basic aid to instruction in education reside in its being method of democratic management and control in a context of changing functions and responsibilities; that cooperative planning is a basic aid to instruction with increased valid learning outcomes; and that it provides a new subject matter and kill sorely needed in the society. The article also attempts to identify the varieties of participation and varied outcomes. Some of the reports represent carefully designed research studies and results of participation. the smallest body of research is found in the area of lay participation in curriculum development.