A comprehensive approach to evaluating the Individualized Education Program (IEP) is delineated. The approach has been developed by the authors and used by special service teams in numerous public school districts. It consists of four interrelated evaluation strategies: evaluability assessment, process evaluation, outcome evaluation, and consumer evaluation. Utilization of each strategy by a special service team at a particular point during the IEP process results in obtainment of specific kinds of evaluation information that can be useful in program development, modification, or outcome determination. In the paper, each evaluation strategy is defined and discussed. Also, practical considerations for installation of the total evaluation approach are enumerated, with particular reference to problems created in settings where partial approaches to IEP evaluation already have been implemented.The task of providing an Individualized Education Program (IEP) for a handicapped child necessitates a program that is amenable to evaluation (Hudson & Graham, 1978). In this regard, practical approaches that allow special service teams to evaluate the extent of IEP implementation and degree of goal attainment have been considered essential for informed program decision making under PL 94-142. (Kennedy, 1978; Safer, Morrissey, Kaufman, & Lewis, 1978). If evaluable special service programs can be designed, special service providers will be able to establish professional accountability in a way that links children in need with effective services (Hobbs, 1975).The purpose of this paper is to describe a comprehensive approach to evaluating the IEP. It has been developed by the authors and used by special service teams in numerous public school districts to facilitate IEP development and improvement. The approach builds upon previously developed IEP technology (Turnbull, Strickland, & Brantley, 1978), in that it prescribes four evaluation strategies that can be used by a team at various stages of the IEP process. The evaluation strategies are: evaluability assessment, process evaluation, outcome evaluation, and consumer evaluation. In the paper, each strategy is discussed in terms of purpose, evaluation questions to be addressed, methods used, and information obtained. Considerations pertinent to successful implementation of the approach in public schools also are enumerated.EVALUABILITY ASSESSMENT In order to develop an IEP that is focused on the needs of the handicapped child, and in order to evaluate program implementation and outcome, the IEP must be in an evaluable format. An evaluble IEP is one in which annual goals and interim (short-term) objectives: (a) reflect pupil needs (i.e., deficits in performance relative to a standard); (b) include criteria for assessing pupil progress; and (c) are linked to specific service programs or activities that constitute the IEP. Thus, an evaluable IEP allows a special service team to make determinations about: (a) the appropriateness of the IEP in addressing the psychoeducational needs of...