Òscar Prieto-Flores is an associate professor at the University of Girona (Spain). He obtained his Ph.D. in Sociology from the University of Barcelona in 2007 and was Visiting Scholar in 2006 of the Center for Migration and Development at Princeton University and in 2012 of the Center for Comparative Studies in Race and Ethnicity at Stanford University and the Center for Evidence-Based Mentoring at UMASS Boston in 2017. He is currently studying what paths lead students of ethnic and immigrant background in Europe on a college track. At the same time, he coordinates with his friend and colleague, Jordi Feu, the Nightingale at the University of Girona, a mentoring program with children and youth of immigrant background.