A model of evaluation planning, implementation, and management is presented that includes: (1) a management information system (MIS) to provide a description of the size and scope of adult literacy and post-literacy programs (ALPPs); (2) naturalistic evaluation to provide insight into the meanings of ALPPs as experienced by participants; and (3) rationalistic evaluation of ALPPs. The model considers the MIS as the foundation stone of a dynamic culture of information. Naturalistic evaluation adds meaning to the data. Rationalistic evaluation is used to: make normative statements, make comparisons between groups, and assert correlations between particular variables. Implementing this model in international settings requires: commitment to internal evaluation; introduction of the model in settings providing technical assistance; and recognition of the outside evaluator's role as a skilled guest, qualified in the theory and methodology of evaluation. Meta evaluative objectives and the input of all stakeholders will be required to achieve a dynamic culture of information, reviewing both instrumental and moral questions. One figure illustrates the model. (SLD)