Improving learning outcomes for all young children requires skilled and knowledgeable leaders with the capacity to effectively promote early care and education programs and systems. To do so, administrators must be able to work within government to improve policy and promote policy implementation at scale in local communities. In many states, however, state offices of early learning do not have staff who are sufficiently trained to achieve their goals and implement policy effectively. To address this gap, the Center on Enhancing Early Learning Outcomes (CEELO) designed a State Early Learning Leadership Academy to support the development of state level early education administrators' leadership skills and competencies. To document the unique elements of the CEELO Leadership Academy and perceptions of the influence of the Academy a team from CEELO conducted a retrospective study in late 2017. This report presents the following: (1) description of the Leadership Academy and a snapshot of the methods used to collect data for this study in the Background section; (2) findings from the analysis of the Leadership Academy design and the Leadership Academy's impact on participants; (3) lessons learned and implications for the design of professional development for state early education administrators; and (4) recommendations for future Leadership Academies. [This report was written with Tracy Jost. For the summary, see ED615035.]