This mixed-method study examines the continuing implementation and critical components of an innovative professional learning system in early learning coalitions throughout the state of Florida. This professional learning system consists of: (a) a multi-tiered program of blended (online and face-to-face) courses for early learning practitioners; (b) collaborative support systems of communities of practice and instructional coaching; and (c) intentional partnerships among early learning practitioners, providers, course instructors, facilitators, coaches, and coalition leadership through blended professional learning initiatives to build capacity and sustainability throughout the state of Florida. Results present analysis of system structure and delivery approaches, mechanisms that influenced change, and impact and effects on practitioners and early childhood providers.