This study documents the development, implementation, and evaluation of an overseas study programme on environmental education for teachers (Ermer, 2004). Using experience overseas and the power of the Internet, a hybrid course model was designed for the delivery of a 3-credit graduate course in environmental education. This involved 11 participants who completed a one-month online course prior to a travel component in Puerto Rico. Eight teachers from Puerto Rico joined teachers from Wisconsin for a 2-week study tour on island ecology and environmental education. A 10-month comprehensive evaluation using qualitative and quantitative research methods reveals the changes participants underwent during the experience. Not only does it have implications for other environmental or international educators but it also serves as a foundation for additional travel courses developed as a result of the study.