Dear Principal, In 2012 under the state’s No Child Left Behind Flexibility Waiver, Minnesota established a goal to reduce achievement gaps by 50 percent by 2017. Schools and districts have received annual data showing progress toward the goal, and many have set local goals under the World’s Best Workforce in alignment with the state goal. It is now 2017, and I am reaching out to share that your school has met Minnesota’s goal of reducing the achievement gap by 50 percent in math. You, your staff, your students, and your commun...