João Sebastião, sociologist, PhD in Sociology. Associate Professor at the Department of Political Science and Public Policies at ISCTE-University Institute of Lisbon and researcher at the Center for Research and Studies in Sociology-IUL (CIES-IUL), where he was director between 2014 and 2020. His main research areas are social inequalities in education, educational policies and school violence. In convergence with the research in sociology of education worked as expert in the area of school violence for different national and international institutions (OECD, EU, Council of Europe; or as developer and Coordinator of the School Safety Observatory of the Portuguese Ministry of Education, among others). At CIES maintains a line of work of applied science on programs about school success and early school leaving, class dimension, school violence and municipal educational plans, cooperating with schools, local authorities or NGOs.