To investigate the future challenges that need to be addressed regarding the delivery and promotion of marine education in Japan, this study analyzed the content of ocean education as well as problems faced in the field using practice reports from elementary school participants in the Ocean Education Pioneer School Program in 2017. After examining the selection tendency of activity contents and the cooperating organizations, this research found that while distance from the sea was reflected in the tendency to select themes of hands-on activities, the relation with distance was not so pronounced. Meanwhile, using text mining techniques, this study extracted characteristic words from each schoolʼs practice reports to code the documents and examined the problems based on the codesʼ frequency of occurrence. The results demonstrated that despite the educational results extracted from childrenʼs learning, different problems were encountered in terms of experiential activities, instructional plans and contents, and cooperation and collaboration with local communities and other institutions. To resolve problems in selecting activity themes, holding experiential activities, and creating instructional plans for ocean education, this study proposed the establishment of a support organization that would link the school and the community, which can be applied in curriculum management as emphasized in the new Courses of Study.