This study aims at exploring an educational practice to bring up children's subjectivity by improving their home environments from the viewpoint of organizational management. In increasing children's subjectivity, it is important to have them experience, realize, and understand how to keep their health by themselves in their everyday life. Therefore, nurse teachers tried to improve their home environment by making it a skill (Wazaka) so that their parents could play an active role in devising a better way to keep their children in fit. We evaluated the subjective growth of children in terms of their "realization" and "satisfaction" and examined the results of questionnaire to their parents. This study reveals that teachers need to have bidirectional relationships with parents and a medium- and to long-term outlook on the children's growth in order to nurture children's subjectivity.