Outdoor Adventure Schooling

Interesting read - how might the concept of "unschooling" play out when thought of through the lens of CRISPA?  How could parents make sure children still have a productive, enlivened educational experience outside of the traditional classroom framework?  Just something to think about... http://www.outsideonline.com/outdoor-adventure/nature/Unschooling-The-Case-for-Setting-Your-Kids-Into-the-Wild.html