The Seminar “Data of and for the educational system: tools for research and teaching” will be held in Rome in 17-18-19 October 2024. This event, which has reached its 9th edition, is an important occasion for researchers, experts, policy makers, teachers, school leaders and anyone using or interested in using data to study and share materials, and results of national and international assessments or, more broadly, of all data on evaluation in the education field.