This report is the sixth in a series of Wisconsin Council on Children & Families (WCCF) reports tracking the progress of Wisconsin's YoungStar program, a quality rating and improvement system (QRIS) launched in 2010 to improve the quality of Wisconsin child care programs. YoungStar focuses on children of low-income working families receiving assistance from the Wisconsin Shares child care subsidy programs. Programs not serving children subsidized by Wisconsin Shares can voluntarily participate in YoungStar. YoungStar rates the quality of child care programs on a 40 point, 5-Star scale and is administered in six regions of the state. The analysis in this report is based on data as of the end of July 2015. This paper provides a close examination of the data on this five-year-old initiative, and explores several questions including: (1) Is YoungStar a valid measure of quality; (2) Is YoungStar sustainable; and (3) Is YoungStar working for children, parents and providers? Key findings include: (1) Seventy-two percent (72%) of Wisconsin Shares children are served in programs rated 3-Star or higher on a 5-Star scale; (2) A total of 31,302 children served by Wisconsin Shares were in 3- to 5-Star programs (higher quality) in July 2015, compared to 17,671 in July 2012 and 4,526 in July 2011-a remarkable increase of children in higher quality programs over that time span; (3) Focusing solely on Wisconsin Shares children in four and five star sites (the highest rated programs), there were 9,942 as of July 2015. This accounts for 23% of the 43,613 total children enrolled in Shares; (4) The distribution of children by Star level is better overall than initially projected in 2010. It is significantly better (14 percentage points higher) at the 3-Star level, but six percentage points worse at the 4-Star; and (5) The average number of children served by the Wisconsin Shares child care subsidy program has declined dramatically over the past six years, from a high of 59,501 in 2008 to 45,597 in the first eight months of 2015. Appended are the following: (1) Background; (2) YoungStar Regions; (3) List of figures; (4) More Information about YoungStar and Early Childhood Issues.