This report summarizes an evaluation study conducted by the McCormick Center for Early Childhood Leadership at National Louis University of its Aim4Excellence program from 2014 through 2017. The Aim4Excellence National Director Credential offers an engaging and interactive online professional learning experience that focuses on the core leadership and management competencies that early childhood leaders need. Aim4Excellence is eligible for college credit, supports the National Association for the Education of Young Children (NAEYC) program accreditation, and aligns with state professional development credentials. (author abstract)