Using data from the American Indian and Alaska Native Head Start Family and Child Experiences Survey (AI/AN FACES 2015), this brief describes the developmental progress of Region XI Head Start children as they complete a program year. AI/AN FACES 2015 is the first national study of Region XI Head Start children, families, and programs. Since 1997, the Head Start Family and Child Experiences Survey (FACES) has been a regular source of nationally representative data on Head Start programs, centers, classrooms, children, and families. Until the 2015-2016 program year, however, FACES had not been conducted in Region XI AI/AN Head Start programs. This was due in part to the time and resources required to engage in the intensive community-based planning and implementation process needed to successfully carry out the study in partnership with Region XI Head Start programs and communities. Head Start programs, researchers, and federal staff all identified the lack of data on Region XI Head Start children and their programs as a critical information gap. The brief provides the first national picture of Region XI children over the course of a Head Start program year and addresses the following research questions: (1) What are the knowledge, skills, and physical health of Region XI Head Start children in the spring of the program year?; and (2) How do these compare to the fall of the program year? [Co-written with the AI/AN FACES 2015 Workgroup.]