This guide is designed to provide assistance and support to school districts for the development of a comprehensive K-12 environmental education program. Emphasis is placed on the acquisition of knowledge, attitudes, and skills that would lead to responsible stewardship of the environment. This revised edition provides more in-depth discussion of positive environmental behavior and how to educate toward that end. Infusion of environmental topics into all curricular areas is recommended. Major sections include: (1) an introduction to environmental education plan development (presenting procedures for developing a curriculum plan and characteristics of an ideal plan); (2) rationale and philosophy; (3) goal and subgoals of environmental education program development (including perceptual awareness, knowledge, environmental ethic, citizen action skills, and citizen action experience); (4) theoretical base (discussing developmental theory, behavioral theory, holistic theory, applying research results, and models); (5) how subject areas contribute to environmental education; (6) selecting and developing strategies (addressing classifying educational experiences, helping students develop subgoal skills, dealing with controversial issues, educational technology, and facilities); and (7) evaluation (the purposes of evaluation, evaluation as a continuous activity, and using the results). Appendices include Wisconsin curriculum planning requirements; equity and multicultural education in environmental education; and the Tbilisi Declaration. (LZ)