It is the National Outdoor Leadership School. They are based out of Wyoming but have facilities and semesters all over the world from Patagonia to India, the Tetons, Mexico, Alaska... all over! Mine was in Washington and Canada where we summited Mt. Baker, rock climbed, sailed and backpacked. NOLS teaches LNT courses and has many of the same stewardship principals as OB so it seems like a place grads would be involved.