Upon completing a Master’s Degree in Childhood Education, he spent several years teaching in New York City Charter Schools. This rewarding experience enabled him to make a difference in the lives of students from low-income communities. Through intensive academic interventions, he successfully closed the achievement gap by large margins each year in literacy and math. After demonstrating leadership and delivering consistent high academic results in the classroom, Mr. Mattison was promoted to serve as an Assistant Principal in a Bedford-Stuyvesant Charter School. During this time, he also obtained a Master’s in Educational Leadership and Administration and his New York State School Building Leadership and School District Leadership Certifications. After years of successful results, Mr. Mattison was assigned to serve as Principal of The Academy Charter School in Hempstead, New York. Throughout his six years as Principal, he helped the organization scale up and expand while maintaining unprecedented outcomes for children. Under his tenure, the school was recognized by the New York State Dept. of Education as a reward school for high achievement and high progress.