Environmental education organizations can do more to either institute evaluation or improve the quality of their evaluation. In an effort to help evaluators bridge the gap between the potential for high quality evaluation systems to improve environmental education, and the low level of evaluation in actual practice, we reviewed recent environmental education literature to reveal the challenges and opportunities for evaluating environmental education programs. The literature review identified strategies for confronting the challenges in environmental education evaluation, as well as notable opportunities for increasing the quality of evaluation in environmental education.