This study explored the effects of after-school services on whether they reduced the possibility of self-care of children. In terms of characteristics of the use of after-school services, it focused on the 1) types, 2) diversity, and 3) use patterns of the after-school services. For the analysis, it used data of the cohort of elementary-school children from the Korean Children and Youth Panel Survey. The main findings are as follows. First, private mentoring and after-school services provided by welfare centers reduced the possibility of self-care. Second, when the total amount of educational time was controlled, the diversity of participating after-school services did not explain the possibility of self-care. Third, when the total amount of educational time was controlled, the use patterns of after-school services did not explain the possibility of self-care. Based on these findings, it suggested policy implications and future research.