The TRACA project analyzes changes in post-compulsory educational trajectories, focusing on complex pathways that do not follow conventional routes. The study investigates factors such as social origin, gender, and location that influence these changes, and how social inequalities impact educational decisions. The project is divided into two sub-projects: one analyzing changes in vocational training and online university education, and another analyzing changes in upper secondary education and university. TRACA is comprised of two teams from the University of Valencia and the Autonomous University of Barcelona, ​​working in a coordinated manner.