To help inform strategies to improve children’s school readiness, this study looked at readiness community by community. We asked: - How does school readiness differ across communities within Oregon? - What factors help to explain these differences? In other words, how much does the overall readiness of children entering Kindergarten in one school or county differ from neighboring schools or counties...and why? This study looked at Oregon Kindergarten Assessment (OKA) scores from the fall of 2014, and publicly available data about communities (e.g., American Community Survey, Oregon Department of Human Services, and others). We use the term "community" to refer to school catchment areas, school districts, and/or counties. (author abstract)