New Jersey school administrators are finding themselves in need of the supports necessary to build on the state's existing model preschools toward a broader vision of early learning, including making strong connections to the early learning system. Clearly, changing the educational mindset and building the related capacity of front-line leaders is paramount for bringing about early learning reform at the district level. In an attempt to address this issue, representatives from Advocates for Children of New Jersey (ACNJ), the New Jersey Department of Education, Division of Early Childhood Education (DECE) and the New Jersey Principals and Supervisors Association (NJPSA) came together in the summer of 2009 to plan for a comprehensive early learning professional development program for school district administrators. The goal was to provide these administrators with research, strategies and techniques to effectively implement high-quality preschool through 3rd grade programs and to assist them in evaluating those programs, as they successfully lead their instructional staff. In the fall of 2009, New Jersey's "PreK-3rd Leadership Training Series" began, with approximately 200 district administrators participating from across the state. This case study describes the development and content of the series, a description of the participants and the findings from surveys that participants completed at the beginning and end of the series. Also discussed are the facilitators' impressions of the challenges and opportunities and corresponding recommendations for next steps in this work. (Contains 6 endnotes.) [This paper was written with the assistance of Amy Goerl, Nonie Lesaux, Jill McLaughlin, David Nash, Nancy Parello and Kathleen Priestley.]