The Teacher Incentive Fund (TIF), now named the Teacher and School Leader Incentive Program, provides grants to support performance-based compensation systems for teachers and principals in high-need schools. The study measures the impact of pay-for-performance bonuses as part of a comprehensive compensation system within a large, multisite random assignment study design. The treatment schools were to fully implement their performance-based compensation system. The control schools were to implement the same performance-based compensation system with one exception—the pay-for-performance bonus component was replaced with a one percent bonus paid to all educators regardless of performance. The report provides implementation and impact information after three years. Implementation was similar across the three years, with most districts (88 percent) implementing at least 3 of the 4 required components for teachers. In a subset of 10 districts participating in the random assignment study, educators' understanding of performance measures continued to improve during the third year, but many teachers still did not understand that they were eligible for a bonus. They also underestimated the maximum amount they could earn. The pay-for-performance bonus policy had small, positive impacts on students' reading and math achievement.