Walking today through Somerville, Massachusetts' Winter-Hill Community School during school hours differs markedly compared with just a few years ago. Gone are the greasy potato chips and chocolate-chip cookies from the a la carte offerings in the cafeteria. Missing are the late morning fundraisers when children would fill up on cupcakes and other sweets before lunch. And banished are the student rewards of candy in the classroom. Today, children in all Somerville public schools can eat an unlimited amount of whole fruit at breakfast and lunch. Fresh salads, often made with local produce including greens from schoolyard gardens, are offered every day. A la carte options include bottled water, yogurt, and other low-fat, low-sugar snacks. In some schools, students receive 30 minutes to eat lunch and play. And teachers frequently request Vegetable of the Month taste tests delivered to their rooms to integrate into their math, science, and/or social studies lessons. This article describes how Somerville Public Schools made such a dramatic change in the health habits of students. It also describes how these schools implemented the Shape Up Somerville project.