An approach to evaluation initiated by the Kellogg Foundation called cluster evaluation (not to be confused with cluster sampling) is described. Cluster evaluation provides a skilled, credible evaluator to work with a cluster of projects to assure that useful and defensible information is obtained for program evaluation. (SLD)

Events that brought independent evaluators together to address common problems and issues in the area of Acquired Immune Deficiency Syndrome (AIDS) education are described, focusing on development and accomplishments of the collaboration. The foundation stemmed from the funding agency's insistence that each program identify an evaluator. (SLD)