Solving global environmental problems requires a major change of values. As relates to environmental education, worldview, ethics and spiritual issues are important elements. But how are environmental issues included in such school subjects that especially discuss values and ethics? In this article I examine 24 Finnish religious education and ethics textbooks to analyze, to what extent environmental issues are integrated and discussed in them. I conclude that there is confusion about what environmental education can be in societal school subjects. The environmental texts in textbooks do not always draw on the specific content of the societal subject in question but repeat content from the natural sciences. Therefore, I suggest contexts and perspectives for discussing environmental issues that would comport with these subjects and supplement existing environmental education at school.