This report reviews the economic literature investigating the effects of the share of immigrants in classes and schools on the school performance of immigrants and natives. The review is organized in four sections. In the first section, we document the recent expansion in the presence of immigrants in European schools, introduce a measure of…

This paper presents a comprehensive analysis of the link between age and proficiency in information-processing skills, based on information drawn from the Survey of Adult Skills (PIAAC). The data reveal significant age-related differences in proficiencies, strongly suggesting that proficiency tends to "naturally" decline with age. Age…