RT Conference Proceedings T1 Students’ birth date and academic progression A1 Marcenaro-Gutiérrez, Óscar David A1 López-Agudo, Luis Alejandro K1 Estudiantes - Aprendizaje - Andalucía K1 Estudiantes - Rendimiento K1 Estudiantes - Adaptación AB Education laws which impose starting cut-off dates for students to begin compulsory education may be negative for those students who are born just before these cut-offs; this is because these students will be among the youngest in their classroom, while those born just after (the oldest students) will see their academic achievement increased. The current research works on this subject employing census and longitudinal data for the most populated region of Spain (Andalusia), making use of a regression discontinuity methodology. We find that the youngest students in the classroom (due to this school entry cut-off) present lower academic achievement compared to the oldest students, being this effect reduced while students progress in their education. This motivates policy interventions aimed at giving the option to parents to choose whether or not to delay their children’s access to school when the latter are too young. YR 2019 FD 2019-06-10 LK https://hdl.handle.net/10630/17787 UL https://hdl.handle.net/10630/17787 LA eng NO Campus de Excelencia Internacional Andalucía Tech.The data used in this research has been provided by Agencia Andaluza de Evaluación Educativa, Consejería de Educación, Junta de Andalucía. This work has been partly supported by the Ministerio de Economía, Industria y Competitividad under Research Project ECO2017-88883-R; by the Andalusian Regional Ministry of Innovation, Science and Enterprises (PAI group SEJ-532) and the postdoctoral contract from the Plan Propio signed by the Universidad de Málaga. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026