Andover Bread Loaf (ABL) is a private, non-profit organization that works with U.S. and international private and public school teachers to enhance the teaching and learning of writing and to help catalyze educational renewal in classrooms, schools, school systems, and communities. Founded in 1987, ABL is based on the Phillips Academy campus in Andover, MA. A collaboration between Phillips Academy, a private college preparatory high school, and the Bread Loaf School of English, Middlebury's graduate school of English, ABL offers summer and school year professional development programs and writing workshops.