Many of the teachers that you are mentoring might be focused on providing options for GIS at NCEA Level 1, 2 and 3. While this is important, GIS can be used in other areas of the geography curriculum, as well as in other subject areas.
For Example, below is a link to a Story Map that shows how GIS can be used to teach Geographic Skills
Or you can use GIS it teach about earthquakes
|Or is the mathematics department is interested in incorporating digital technology in their classrooms - GIS can be the tool they could use. Esri has some short lessons in Mathematics to help with this implementation - these lessons can be found at GeoInquiries for Math | Algebra Activities Using GIS . Good news these GIS based mathematics lessons don't require an ArcGIS Online username and password to use so that takes some of the complexity out of implementing them .|
Or the history department might be interested in using GIS. Below are some helpful resources specific to topics that we teach in NZ
and some more generic short GIS based history lessons GeoInquiries for World History | Inquiry-Based Activities