The Partnership Model of School and District Turnaround is Michigan's policy for improving student outcomes in its lowest performing schools. In compliance with the federal Every Student Succeeds Act (ESSA), the Michigan Department of Education (MDE) identifies as Partnership schools those in the bottom 5% of the Michigan School Index System and with graduation rates below 67%. Districts with at least one Partnership school enter into agreements with MDE and their Intermediate School Districts (ISDs) and are designated as Partnership Districts. These Partnership Agreements outline improvement goals, accountability measures, and the support that MDE and the ISD will provide to the district and its schools. This report examines the effect of the Partnership Model on student achievement in Round 4 Partnership schools. The report then moves to the intervention's effect on two intermediate outcomes that districts targeted in their improvement plans--teacher turnover and student attendance. The authors leverage teacher and principal survey data to further explore potential mechanisms underlying the causal findings, but point interested readers to the 2023-24 Implementation Report for more on Partnership implementation in the first two intervention years. The report concludes with implications for policy and practice.