I recently met Howard Hiton, one of the founders of the Portland (Ore.) based organization. Their book, BAM! and their website offer guidance to both teachers and parents.
From the guidebook:
We think of this curriculum as a kind of adventurer's guide into the mostly uncharted territory of facilitating supportive, strengths-based groups for boys in schools and community settings. We offer ideas for routes and pathways to interesting adventures and reasons why such adventures are important. Our hope is that this guidebook will serve as a kind of map for you to use as you navigate the challenging and rewarding work of mentoring and counseling boys. Our guidebook provides both the big ideas that orient our work--why we go down this path at all--and the small details of how we plan for and lead each week's adventures in order to accomplish our goals and arrive at our destinations.