The Geocaching kit has example maps for you to set up your own geocache at your school.  The kit also has some examples of caches/trinkets to leave at each location.  GPS units and sample GIS software allow students to visualize their path after the geocache adventure.
 
This kit includes:
Sample maps
Sample data collection sheets
Example trinkets
Cache boxes
Cache markers
GPS units and download cables
GIS software samples
Pencils