A study of school district uses of evaluation and test data is used to illustrate the variety of ambiguities that can appear in qualitative data. Rules of evidence to distinguish valid and potentially nonvalid testimony are proposed. Uses of testimony in evaluation are discussed. (BS)

A participatory model in evaluation is presented as an extension of the stakeholder-based model focusing on the increased participation of primary users. Twenty-six empirical studies that support an organizational learning justification of the model are reviewed and classified. Requirements for participatory evaluation are discussed. (SLD)