This case study followed the implementation of the co-principal leadership model in a K-8 school district for three years. A district superintendent implemented the co-principal model to (1) resolve issues around merging existing schools with well-established principals; (2) provide leadership stability and succession planning; and (3) serve as a model for shared decision-making and problem solving. This study combined research with practice by investigating the implementation of the co-principal model as experienced by individual co-principals. The complexities involved in transitioning from the solo principal model to the co-principal model in the schools of one district were evident in this case study.