In 2014, Hannigan was one of two schools in New Bedford that partnered with Grow Education (Grow), a program of the Marion Institute, to create a school-based garden. Grow offers teachers the opportunity to engage and collaborate through retreats and workshops, focused on enhancing community partnerships and incorporating garden-based learning into curriculum standards. Through the creation of school-based gardens, Grow aims to increase accessibility to locally grown food and strengthen New Bedford community and public school collaboration.