In the past decade, interest in multisite evaluation has grown, but there is still not a substantial literature on the issues involved in conducting evaluations in multiple sites. There are, however, a number of threads that readers may be interested in pursuing. The literature on clinical trials increasingly contains references to conducting multicenter clinical trials. Cluster evaluation is an approach to multisite evaluation that has been developed by the W. K. Kellogg Foundation for improving the evaluation of certain foundation initiatives. The studies described in this volume represent an approach to multisite evaluation that has much in common with the clinical trials tradition. However, it shares with cluster evaluation an appreciation for the adjustments that are necessary to reflect the realities of conducting evaluation research in actual service settings. This is the 94th issue of the quarterly report New Directions for Evaluation.