To evaluate the Follow Through portion of the Planned Variation program (1967-1970) eight distinct approaches were studied. The approaches rest on differing philosophical and psychological premises and employ a variety of pedagogical strategies. A battery of 14 existing and specially developed measures were used to cover the cognitive area. Factors such as organization of classrooms, parent-child interaction, supervision, child performance data and diffusion effects were analyzed. Among the most important outcomes of the first year of this 3-year assessment study are (1) cataloguing the process of program implementation (2) describing classroom processes (3) establishing the scheme and instruments to be used for the second and third years of the study. The general conclusion of this document is that first year outcomes are encouraging but it is too early to assess with confidence the specific outcomes of specific program models. One fourth of the document consists of bibliographic references and appendixes detailing test instruments. A review and summary of this document is available as PS 004 917. (WY)