AppleTree is an innovative nonprofit that develops and provides proven early childhood education programs to the most underserved three- and four-year-olds to close the achievement gap before students enter kindergarten. AppleTree is an entrepreneurial enterprise consisting of AppleTree Institute for Education Innovation and AppleTree Early Learning Public Charter School, with seven public charter preschool campuses serving as models for effective teaching and learning. Our innovative program has four core components: a focus on instructional quality, standards-based curriculum, quality classrooms, and a commitment to using data. AppleTree is expanding and scaling Every Child Ready--a national prototype for improved teacher effectiveness. Every Child Ready is a comprehensive instructional model that drives how to teach, what to teach, and how to tell it's being done to increase teacher effectiveness and children's learning in early childhood classrooms.