Environmental educators are typically interested in four domains of environmental knowledge including:

• “Knowledge in the natural sciences, including knowledge of ecological concepts and principles
• Knowledge of environmental problems and issues associated with them
• Knowledge of environmental problem-solving and action strategies
• Knowledge of the social sciences (with emphasis given to concepts and principles that inform our understanding of human-environment interactions and environmental problems, issues and solutions)”

Marcinkowski, T. (1993). Assessment in Environmental Education. In R. J. Wilke (Ed.), Environmental Education Teacher Resource Handbook:  A Practical Guide for K-12 Environmental Education (pp. 143-198). Millwood, NY: Kraus International Publications. (text abridged).