Objectives This study aimed to enhance the quality of after-school programs in kindergartens by visiting kindergartens with exemplary after-school operations and examining their management practices. Methods Through the cooperation of officials from regional education offices, kindergartens with notable after-school program operations were recommended, and eight kindergartens across the country were visited. Data related to the operational cases of each kindergarten were collected, and interviews were conducted with principals and teachers. The study examined how after-school programs are conducted through various procedures, processes, and interactions within different kindergarten contexts. Results The results indicated that high-quality after-school programs in kindergartens were managed through various methods, including the operation of professional learning communities, adherence to play-centered after-school programs true to their essence, the appointment of dedicated after-school teachers, community-linked after-school programs, and the establishment of care systems for children. Care systems for children were often established in rural kindergartens and operated in forms such as all-day care, Saturday care, intensive care during farming seasons, and care linked to local children's centers. Conclusions This study suggests the need for a change in perception about after-school programs among principals and curriculum teachers, recognition and training support for after-school teachers and connection with local communities.