Seminar CRENoS and Dipartimento di Scienze Economiche e Aziendali - Rosario Maria Ballatore

28/03/2014 - 13:20 to 14:20

Aula Magna della ex-Facoltà di Economia

Viale Sant'Ignazio 74, Cagliari

Presentation of the paper: 

The Tower of Babel in the Classroom? Immigrants and Natives in Italian Schools (with Margherita Fort e Andrea Ichino)


Rosario Maria Ballatore 
Banca d'Italia
We exploit rules of class formation to identify and estimate the causal effect of increasing the number of immigrants in a classroom keeping class size constant. Since principals use class size to neutralize the possible detrimental effects of immigrants' inflows, this composition effect is the relevant policy parameter but it has been neglected by the literature so far. Our empirical analysis is guided by a model of the educational production function that allows for two types of students, natives and immigrants, who have a non-negative probability of generating disruption or positive externalities across or within groups. We show that the pure composition effect is negative both in language and in mathematics.