The book "School Effectiveness in Tigrai (Ethiopia) Primary Schools" offers a comprehensive analysis of the processes that contribute to the effectiveness of schools in the Tigrai region. It compares these processes with international literature and draws lessons that can help improve the quality of education. By considering theoretical advancements in school effectiveness models over the past decades, it provides a critical review of developments in school effectiveness and efficiency in both developed and developing countries. The book relies on a variety of research projects and relevant literature to identify appropriate measures for school effectiveness. The empirical data are crucial for examining the quality of education in the specific contexts of developing countries.