Educational and economic research shows that investing in school preparedness for low-income children prevents needless public spending and produces payoffs in K-12, government programs, and the private sector. Conversely, not investing in or cutting programs that produce school readiness results in increased spending and lost benefits.... This study estimates the current cost savings and revenues to Michigan generated from the investments in school readiness over the past 25 years, the cost burden to Michigan when children are not fully-prepared at kindergarten entry, and the additional benefits that could be realized if Michigan were to expand its investment in school readiness to all educationally disadvantaged children.