An organizational, domain-referenced approach to evaluation of public school special service delivery systems is offered. Derived from organizational and systems theory, related research in these areas, and the author's experience in special service delivery system evaluation, the framework focuses on the process of service delivery and is seen as useful to the improvement of service delivery within the context of Public Law 94-142. The paper delineates an organizational conception of a "SchoolBased Special Service Delivery System," identifies several "Systemic Domains" in which evaluation can occur, outlines evaluation questions, methods, and procedures relative to each domain, and specifies evaluation information derived from evaluation in each domain. The paper is presented for consideration by school professionals with the hope that it can be adapted by them to their local circumstances.