Educational change is a constant reality that is faced by school leaders today. These leaders are held more accountable than ever before for decisions being made. This chapter discusses the strengths in the continuous school improvement approach that develops both leadership and organisational capabilities such as collaboration, communication, and organisational trust within schools and school systems as they continue to deal with the ongoing onslaught of change and complexity present today. In these complex, ever-changing school contexts, leaders have to make multiple decisions on a daily basis. This chapter focuses on making sense of ‘how' and ‘why' data-informed decision-making continues its rising ascent and significance in educational leadership contexts within schools today. Through the accurate use of educational data within schools, a number of these decisions, can through collaborative decision-making processes assist school leaders and teachers in delivering better educational opportunities and outcomes for students.