“…Thanks to expanding globalisation and the economic crisis, Europe has recently seen a growth of more vulnerable zones, as a reflection of increasing social inequalities (Musterd et al, 2017; Tammaru et al, 2016). In the case of Barcelona, the economic crisis has had a major impact and the more vulnerable zones are now to be found in the peripheral areas (Sarasa et al, 2018), which have a growing immigrant presence at the same time as segregation is increasing (Rubiales, 2020; Sorando & Leal, 2019). In these vulnerable neighbourhoods, the concentration of the immigrant population in schools is normally greater (Johnston et al, 2007; Robinson, 1984), owing to a higher birth rate, an ageing demographic structure in the autochthonous population and other factors of choice, both positive (concentration of students of similar origins) and negative (fruit of discrimination).…”