The advent of interoperating GISs has many implications for education. While there are certainly important issues to discuss with regards to additions to the curriculum which address the technological and institutional impacts of interoperating GISs, this paper focuses on the theme of interoperability for education. Interoperability provides a context for the development of shareable education materials which in turn allow for collaborative education in a field in which rapid technological developments are making it difficult for individual instructors to stay up-to-date with both the science and the related technologies. Such collaborative education initiatives raise many issues, both technical and institutional, but a number of existing projects provide some basis for rapid developments. An international effort to create an infrastructure for the development and distribution of interoperable, shareable GIS education materials is described.