The interest in environmental issues and the awareness of the importance of environmental education have been increasing. This research was carried out in part to respond to such a change, and it aims to search for and suggest ways to strengthen subject-based environmental education in Korea, the most significant part of the formal environmental education. One of the most important of this research was understanding the present status of environmental education of elementary, middle, and high schools in Korea, which was conducted by the questionnaire survey targeted to teachers on the subject-based environmental education. The survey was carried out comprehensively to include respondents from technical and home economics course as well as from vocational high schools. Through this survey, we gained information on the awareness of teachers and students on the objective, learning-teaching strategies and evaluation of environmental education as well as an understanding of the present status of environmental education in schools of Korea.