This paper examined the trends in state-level policy on environmental education in the United States. In the 70's, environmental education policy made great progress. But in the first half of the 80's, environmental education policy has declined rapidly. We think this decline is result of incomplete integration of environmental education into the educational system. In the latter half of the 80's and 90's, environmental education policy has been revived. This revival waw activated by grass-roots activity by environmental education advocates and was accelerated by the National Environmental Education Act. At present, environmental education has a chance to take part in educational reform and be successfully integrated into the educational system. Wisconsin, Arizona and Florida are states with advanced environmental education policy. For example, Arizona has a fine and comprehensive state plan for environmental education. Wisconsin has an environmental education center which supports state-wide in-service teacher education and environmental education assessment. Florida has a network of state agencies for environmental education and environmental education trust funds. The above cases are taken up in this paper.