Instrumental variable models for discrete outcomes are set, not point, identifying. The paper characterises identi.ed sets of structural functions when endogenous variables are discrete. Identi.ed sets are unions of large numbers of convex sets and may not be convex nor even connected. Each of...

Although participation rates in the educational system might look impressive for a Latin American country, educational outputs are not that great. Uruguay is characterized by educational gaps and high drop-out rates in the secondary education. In our work we first explore the returns to...

Many large universities require freshman to live in dormitories on the basis that living on campus leads to better classroom performance and lower drop out incidence. Large universities also provide a number of academic services in dormitories such as tutoring and student organizations that...