This study aims to find out whether the Islamic Elementary School (Madrasah Ibtidaiyah) achievement can improve through principal's transformational leadership. The methodology of this research is descriptive qualitative which is designed to collect data and information in depth. Data collection is done using triangulation techniques that combine observation, interview, and documentation methods. Improving principals' transformational leadership progressing step by step, which can be realized by forming the ideas, building shared vision, power sharing, and gaining expertise and experiencing success. The results of the study show that the Madrasah Ibtidaiyah achievement can improve through principal's transformational leadership.