Why are lower socioeconomic background students underrepresented in Erasmus? A focus on the selection into mobility and degree course organization

Disadvantaged students in higher education are significantly underrepresented in study abroad programs. Existing research has explored this socioeconomic disparity in student mobility, primarily by comparing mobile and non-mobile students. However, these studies often overlook the extensive selection process students undergo to join a mobility program, encompassing application phases, eligibility assessments, and ability evaluations. This study investigates how these selection steps contribute to the unequal uptake of higher education mobility in Europe, focusing on the European Union's most popular study-abroad program 'Erasmus'. Additionally, it explores how the program organization at the degree course level is associated with socioeconomic disparities in student mobility. Using administrative population data from a large Italian university, covering 46,000 graduates, the study finds that, on average, 90% of socioeconomic disparities in Erasmus mobility are due to disadvantaged students shying away from the application, while ability selection is only marginally important. Additionally, degree-level characteristics, particularly the social segregation across fields of study, matter. Although the study is based on data from a single university in Italy, it has implications for an international audience in countries with similar institutional settings for international student mobility, as it demonstrates for the first time the impact of the selection process and degree course organization on the socioeconomic gap in study abroad program participation.