This fall, the nine states that finished as runners up in last year's groundbreaking Race to the Top competition will have an opportunity to reapply for a grant. The winners will receive a combined $200 million to help implement the bold education reform plans they developed last year. Many of the eligible states already have clear roadmaps toward evaluations that promise to provide a far more complete, accurate picture of how well teachers are helping their students learn, along with useful feedback that helps teachers grow professionally. Some have even codified these plans into law. Now comes the hard part. As states across the country have already learned, strong implementation will determine whether a new evaluation system lives up to its potential. Even the most elegantly designed evaluation system won't succeed unless schools implement it consistently and accurately. Of course, states cannot directly manage the implementation of a new evaluation system in hundreds or thousands of schools (especially since some states allow each district to develop a system that meets certain standards rather than developing a common statewide model). But states "can" help districts and schools navigate what may be a difficult transition to more rigorous instructional standards and to a greater investment of time and resources in teacher evaluation and development. The third round of Race to the Top could provide the nine eligible states with the resources they need to do this--but only if they apply the money toward the right priorities. This paper outlines the investments states should make in order to ensure that schools implement their new teacher evaluation systems successfully. These investments fall into five major categories: (1) Tools and Systems; (2) Training; (3) Communications; (4) Monitoring and Support; and (5) Sustainability. (Contains 2 footnotes.)