This third year interim report, one of a series of documents on the evaluation of Project Developmental Continuity (PDC), presents findings from three major analyses of program implementation; measurement of the extent each program has implemented the basic PDC Guidelines; a description of patterns of that implementation; and analysis of some facts and events that have shaped that implementation. A Head Start demonstration program, PDC is aimed at providing greater educational and developmental continuity between children's Head Start and primary school experiences. This report is divided into 5 parts. Chapter I gives a general introduction to PDC and the PDC evaluation. Chapter II describes basic structure (both national and local features) of the PDC project and gives demographic information for each of the sites. Chapter III presents the rationale, design, and major findings from the assessment of implementation. Chapter IV presents an overview of some of the similarities and differences found in interpretations of the basic guidelines at different sites. Chapter V presents the final cross-site analysis: the exploration of the factors, events, circumstances and plans that helped shape local PDC projects. Four appendices provide supplementary information. (Author/SE)