Given that there is no universal way to measure implementation fidelity, instructional designers developing instructional innovations may find themselves faced with the challenge of determining the extent to which teachers' implementation of an instructional model is faithful. This article contends that a faithful implementation is one in…

Discusses the historical development of "hard" and "soft" systems thinking traditions and examines how these traditions have been understood and applied in the field of instructional development. Proposes the need for a synthesis of the two traditions in planning, implementing, and evaluating instructional programs. (AEF)

Provides guidelines for systemic change in education. Presents an overview of the change process. Discusses preparing for change; building a core team to lead the design effort; transforming vision into system design; shifting focus from planning to implementation; and implementation, summative evaluation, and closure. (AEF)

Describes how a system approach, often used in instructional systems design, was applied to the solution of a societal problem, i.e., how to enable small communities with limited resources to carry out successful substance abuse prevention programs involving training and education. Needs assessment is discussed and curriculum design is described.…