Absence data from the Follow Through program in 18 Philadelphia public schools over the 1974-75 school year are presented according to grade, model and total program. The report, covering grades K-3, examines both overall absence patterns and differences in absence patterns of pupils with and without previous Head Start or equivalent experience. From a frequency distribution of data obtained, six absence intervals were established, ranging from no absences to more than 75. The six intervals were recorded for the total population (ALL) and two subgroups: pupils with previous Head Start or equivalent experience (HS) and those without such exposure (NHS). Across models, absence rates at every grade level were lower for HS pupils and higher for NHS students, as compared to ALL pupils. Within individual models, the difference between HS and NHS pupil absenteeism was notable, frequently 20 or more percentage points in favor of the HS group. HS pupil attendance rates were significantly better than NHS rates of all grade levels in four of the seven models, at three grade levels in one model, and at two grade levels in two models. Model programs were: EDC (Educational Development Center), Bank Street, Behavior Analysis, Philadelphia Process, Parent Implemented, Bilingual, and Florida Parent. Tables and graphs comprise approximately half of this report. (Author/BF)