Legally mandated educational programs often lack specificity and guidelines for such programs are often vague and subject to considerable variability in interpretation. This situation presents perennial problems for evaluators. Few evaluation models have the flexibility for dealing with this ambiguity and variability while at the same time achieving program evaluations which are both formative and summative. The Delphi-Discrepancy Evaluation model is designed to assess and prescribe. The five phases of the model include: (1) establishing a standard by using the procedures of the Delphi Technique, (2) gathering data about programs based on the standard, (3) determining the discrepancy status of programs, (4) analyzing these discrepancies in relation to criteria and other programs in the population, and (5) prescribing and remediating based on the analyses of discrepancies. Bringing together successful techniques such as the Delphi Method, Discrepancy Evaluation, and the notions of Euclidean Distance to bear on a particular evaluation problem should facilitate analyses and render decision-makers with more valid information for formative and summative purposes. (Author)