The activities of the Multilevel Analysis Project of the Center for the Study of Evaluation from February 1 to June 1, 1978 are summarized. Twelve project staff activities are listed, including papers on alternative analytical models for identifying educational effects, conference presentations, and grant proposals. A report on empirical comparisons for a large data set is included: "Selected Topics in Regression-Based Analyses of Multilevel Educational Data." Within the domain of regression-based analyses of multilevel data from quasi-experiments and field studies in educational research and evaluation, the question of choice of unit of analysis or analytical model is discussed. The use of within-group slopes as indices in between-group analyses and the estimation of within-group dependency and its role in analyses of multilevel data are considered with illustrative empirical data. A trend to meta-analyses developing in educational evaluation is shown, and it is recommended that alternative analysis approaches be applied to a wide variety and sizeable number of actual data sets, each with potentially differing sets of inadequacies. Both the methods and the influence of data limitations on methods need further study. (CM)