This report provides achievement information from the Philadelphia, Pa. Follow Through program in Mathematics and Reading for the five years, 1971-1972 through 1975-1976. The data are drawn from cross-sectional analyses, focusing primarily on mean score performance in Total Mathematics and Total Reading on city-wide tests. The principal findings are: (1) While the Total Program (TFT) shows continuous improvement in both Math and Reading in Grades K-3 across the five years, it is the Behavior Analysis Model (BA) which has produced the greatest positive program effect. (2) Across the five years and across Grades K-3, BA easily ranks first among the models in both Math and Reading. (3) The closest model to BA in K-3 performance across the five years is the Bank Street (BS), which ranked second among the models in Math and third in Reading. (4) The Parent Implemented Model (PI) could not be ranked over the five years because it was not tested in 1972-1973. The Philadelphia Process Model (PP) ranked second in Reading across the five years, principally because of improved performance in 1975-1976. It ranked fifth in Math, however. The Education Development Center Model (EDC) ranked third in Math, and fourth in Reading, having improved substantially since 1974-1975. The Florida Parent Model (FP) ranked fourth in Math and fifth in Reading. The Bilingual Model (BI) ranked last in both subject matter areas. (Author/MV)