Objective: The purpose of this study is to verify the effect of directors’ coaching leadership on teachers’ play implementation competencies and the mediation effects of teachers’ reflective thinking and creative job performance by conducting a structural relationship analysis. Methods: The subjects of this study were child care teachers who were purposefully sampled from the metropolitan area which includes Seoul, Incheon, and Gyeonggi Province. A total of 267 questionnaires were analyzed after excluding poor or incomplete questionnaires by use of SPSS Statistics 25.0 and the AMOS 21.0. Results: Directors’ coaching leadership was positively correlated with teachers’ reflective thinking, creative job performance, and their play implementation competencies. Directors’ coaching leaderships directly and indirectly influenced teachers’ play implementation competencies, which was mediated by teachers’ reflective thinking and their creative job performance. Conclusion/Implications: Directors’ coaching leadership has a significant implication for teachers’ play implementation competencies which became more important after the national curriculum standards had been revised.