An Analysis of the differences in Perceptions of ESD Value, Environment-friendly Behaviors and PCK of Environmental Education instructors depend on Application Experience of ESD

Objectives This study analyzed whether environmental education instructors' perception of the value of ESD, their degree of practicing environment-friendly behavior, and their PCK for ESD were significantly different depending on their experience in applying ESD, and considered the implications. Methods For this purpose, the survey questions were constructed and a survey was conducted targeting environ-mental education instructors active in Seoul and Gyeonggi-do from September to November 2023. Accordingly, an independent samples t test was performed on the survey data of a total of 83 environmental education in-structors using the SPSS statistical program to analyze significant differences according to ESD application experience. Results First, environmental education instructors appeared to have a very positive perception of the value of ESD, and it was analyzed that there was no significant difference depending on ESD application experience.Second, en-vironmental education instructors with ESD application experience were found to have statistically significantly higher ESD class composition ability and ESD teaching strategy ability than environmental education instructors without ESD application experience, and ESD teaching and learning environment creation ability and instructor ability. It was analyzed that there was no significant difference in professional development efforts.Third, there was no significant difference in the degree of practicing eco-friendly behavior at an individual level according to the environmental education instructors' experience in applying ESD. However, the level of practice of environ-mentally friendly behavior at a collective level among environmental education instructors with ESD application experience was found to be statistically significantly higher than that of environmental education instructors with-out ESD application experience. Conclusions However, the PCK of environmental education instructors with experience applying ESD was found to be somewhat higher than the average level. Therefore, the implications were considered that there is a need to establish a continuous and systematic governance support system so that environmental education instructors can cultivate PCK for ESD and experience various ESD-related activities.