This article suggests that environmental ethics can have great relevance for environmental ethical content analyses in environmental education and education for sustainable development research. It is based on a critique that existing educational research does not reflect the variety of environmental ethical theories. Accordingly, we suggest an alternative and more nuanced environmental ethical conceptual framework divided into Value-oriented Environmental Ethics and Relation-oriented Environmental Ethics and present two pragmatic schedules for analyses of the value and relation contents of e.g. classroom conversations, textbooks and policy documents. This framework draws on a comparative reading of some 30 key books and 20 key articles in academic journals in the field of environmental philosophy and reflects main traits in environmental ethics from the early 1970s to the present day. (Contains 3 tables, 2 figures, and 16 notes.)