%0 Journal Article %T An investigation of professional development among educational policy %A Huu Cuong Nguyen %J Management in Education %@ 1741-9883 %D 2019 %R 10.1177/0892020618781678 %X This study investigates professional development among educational policy-makers, institutional leaders and teachers. Through a synthesis of associated literature, this study identified a large number of articles focusing on professional development among teachers and lecturers. However, only a few studies on professional development among leaders and managers of educational institutions were ascertained, and research on professional development for educational policy-makers is also limited. This article first presents key aspects of professional development. It then reviews professional development theories and practices for policy-makers, institutional leaders and teachers. Finally, a discussion and recommendations are provided. This article contributes to the limited literature on professional development at the meso-level for institutional leaders, and at the macro-level for policy-makers %K educational administrators %K policy-makers %K professional development %K teachers %U https://journals.sagepub.com/doi/full/10.1177/0892020618781678