This study analyzes the factors influencing parents satisfaction with after-school programs and their change in elementary school by using a sample from DELS (Daegu Education Longitudinal Survey) 1 (2017) ~3 (2019) data. The research questions in this study are as follow. First, what is the pattern of changes in elementary school parents perception of satisfaction with after-school programs? Second, what factors influence changes in elementary school parents’ perception of satisfaction with the after-school program? To this end, the LGM (latent growth model) was applied to analyze the relationship between longitudinal changes and factors influencing the changes. As a result of the study, cultural activities (.117, p<.05), participation in school activities (-.090, p<.05), and satisfaction with school education (.576, p<.01) were statistically significant at the initial level (intercept) of satisfaction of elementary school parents after school. The rate of change (slope) was influenced by the satisfaction with school education (-.097, p<.05). Based on this, this study suggested some policy implications for improving the satisfaction of elementary school parents with the after-school program.