The food-systems collaboration between UVM and South Andros High is based on reciprocity. In January, Walter Poleman, senior lecturer at the Rubenstein School and GreenHouse faculty director, took students from his service-learning course to the Bahamas to help build an aquaponics system at the school’s farm. In the system, waste from freshwater tilapia provides nutrients for assorted vegetables, which in turn remove excess nitrogen, a waste byproduct. Last summer, South Andros students assisted with a garden project at UVM.