In this paper we study the effect of family and school background on students' academic performance, who attended public schools in Medellín. Two approaches are implemented in this work. Firstly, we investigate the effect of covariates on different segments of scores' distribution by quantile...

in 2002 the local government of Medellin started a program for school-age children who were not covered by the educational public system. The program, called Concession Schools, was designed to provide private educational management by means of public resources where public supply was reduced....

This paper studies the determinants of the use of different strategies by mobile-users for reducing their spending. This empirical exercise is done with a special survey focused in lowincome people from developing countries such as Argentina, Brazil, Colombia, Mexico, and Peru. Our methodology...