This paper reviews research literature on the impact of environmental education initiatives on learners' attitudes, beliefs and behaviours. The review focuses on initiatives involving learners of all ages and school-aged learners in particular. The review shows two things. There is some evidence that environmental education initiatives are associated with changed beliefs and attitudes, and this is mainly in the short-term. There is little evidence that environmental education initiatives lead to behavioural change, especially in the longer-term. The review concludes that there is a need for more and better research evidence that behavioural change in learners follows from involvement in environmental education.