I ran an outdoor ed program for three years that served kids from K through 12. One of the cornerstones was orienteering instruction. If you want some curriculum and lesson suggestions, shoot me a PM with your e-mail address.
Having looked for lost hunters as a SAR volunteer and having communicated with many hunters on the subject, I can say without fear of contradiction that backcountry navigation is woefully inadequate among the VAST majority of hunters. Fix that for your charges and you will have served them well.