Many states and districts offer full-day kindergarten with the hope that additional learning time will improve student outcomes. In 2015/16, Oregon shifted its funding structure for kindergarten enrollment, which created incentives for districts to offer full-day kindergarten. In partnership with the Oregon Department of Education, REL Northwest conducted a study to understand which districts offered full-day kindergarten before the shift and how those programs were structured, the impact of attending full-day kindergarten on student outcomes in one district, and how full-day kindergarten programs were implemented after the shift. (author abstract)