The purpose of this paper is to provide a comparative policy analysis of successful strategies that have been implemented across European countries to address early school leaving (ESL) and academic underachievement. Employing a transformative and multidimensional approach, the study examines systemic and local interventions that integrate cognitive and socio-emotional dimensions of learning. Using Eurostat data to categorise countries based on their ESL reduction progress, the analysis evaluates legislative frameworks, policy initiatives, and educational practices through the prevention, intervention, and compensation model. The findings identify common themes such as the expansion of early childhood education and care (ECEC), enhancement of guidance and counselling services, targeted support for socio-economically disadvantaged groups, inclusive policies for marginalised populations including Roma communities, and the development of vocational and second-chance education pathways. The paper highlights the critical importance of coherent and scalable policy design to reduce educational inequalities and contribute to achieving European Union ESL reduction targets by 2030. It advances policy discourse by emphasising the essential need for balanced preventive and compensatory measures to improve educational outcomes and to foster social inclusion across varied national contexts.