Two teachers. Two classrooms. One school year. 180 Days represents the collaboration of two master teachers—Kelly Gallagher and Penny Kittle—over an entire school year: planning, teaching, and reflecting within their own and each other’s classrooms in California and New Hampshire.  Inspired by a teacher’s question, “How do you fit it all in?” they identified and prioritized the daily, essential, belief-based practices that are worth spending time on. They asked, “Who will these students be as readers and writers after a year under our care?”