Basic survival is just a few days. I think it could easily be part of PE or Home Ec. Home Ec has been removed from many schools, but it should be back in. Home Ec can include survival, balancing a “checkbook,” what affects credit score, sewing on a button, and kitchen safety. Survival can include how to prepare your house for hurricane season to what to do in an earthquake, it’s not just lighting a fire outside.
Home Ec certainly doesn’t need to be a full semester class.