The recording, reporting, and use of data on school attendance and absence (DSAA) play a crucial role in understanding attendance and addressing absence in educational systems worldwide. However, a comprehensive grasp of the diverse approaches adopted across and within different countries has remained elusive. To address this knowledge gap, the International Network for School Attendance (INSA) facilitated this special issue providing an in-depth investigation into DSAA practices in 13 countries. This opening paper serves two purposes. First, it lays the conceptual groundwork for readers before they delve into the recording, reporting, and use of DSAA in different countries. Second, it presents key insights that emerge from the diverse array of contributions and a discussion of challenges and opportunities for the field. These include the substantial inconsistencies within and across countries; the pressing need for standardised best practices for recording, reporting, and using data; and the importance of embracing technological advancements to enhance the use of data. We envisage that the collective effort of the 40 authors involved in this special issue will enrich knowledge, enhance collaboration, and create real-world impact by enabling interested parties to develop, use, and evaluate data-driven strategies related to attendance and absence. By working together to address challenges and seize opportunities related to DSAA, we help young people access the education they rightfully deserve.