I should go do some more, I'm fairly confident in my map skills but I bet there are some assumptions of mine to knock down.
Along with basic financials, I inclined to agree that'd be a very good add for required classes.
If I remember right, it was a one- or two-day field trip we took during middle school. Everyone was excited when it was their class's turn to go. (But who doesn't get excited for a field trip?)
Not as comprehensive as what you'd learn in scouts or taking a professional survival class, but it was a good overview. I still remember a lot of it and find the material useful.
This was in South Lake Tahoe CA, so we were already in the mountains. :) Cost wouldn't have been any worse than any other field trip.