"Surprise! Here come the preschoolers." Thousands of elementary principals are receiving a similar message from their supervisors as the concept of universal preschool is propelled to the forefront of the national education agenda. School districts across the country are being infused with wide varieties of federal- and state-funded early childhood programs and, largely for practical purposes, many of those new preschool classes are being placed on existing elementary school campuses. This article highlights the professional development program of Cabarrus County Schools (North Carolina) and describes how it has overcome the missing link in principal preparation for preschool and has prepared its school leaders to navigate the rough waters of mixing regulations, licenses, and 4-year-olds with their traditional elementary schools.