On 26 November, over 1,200 students in presence and around 1,300 online took part in the International Cosmic Day 2024, the international day dedicated to cosmic ray physics, coordinated in Italy by the INFN project OCRA - Outreach Cosmic Ray Activities, aimed at high school teachers and students from all over Italy to get them involved in cosmic ray physics. The Italian students, like their peers abroad, had the opportunity to engage in the analysis of data from a real cosmic ray detector. In the coming weeks, some of the students will also join in-depth courses on various topics in the field of cosmic rays, involving experimental activities and the writing of a final scientific paper.