We have played a catalytic role in helping Achievement First (AF) to replicate its K-8 math program to selected partner schools in New York City outside AF’s traditional charter network through a train-the-trainer model. Leap Educational Consulting (LEAP), the trainer and now a standalone organization, is supporting district and charter schools across 20 states to implement math curriculum and build instructional capacity that drive student achievement at their schools. The model leverages intensive coaching and tools that enable schools to effectively implement AF’s Accelerate curriculum. For two years in a row, 75% of the partners had at least 5 percentage point growth on their state tests each year and nearly a third had 10+ percentage point growth. We are supporting LEAP in testing the model’s efficacy at schools that are using alterative math curricula.