Data-driven decision-making (DDDM) is a powerful tool that improves student achievement, teacher effectiveness, and school improvement. With DDDM, educational leaders use data to make better decisions about instruction, identify struggling students and track progress to provide the necessary support. DDDM also enhances teacher effectiveness by providing feedback and support based on data and enables tailored professional development programs. Additionally, DDDM helps leaders identify areas for school improvement, and implement targeted interventions to address specific needs. Overall, DDDM positively impacts educational leadership by using data for informed decisions that enhance student achievement, teacher effectiveness, and school improvement.