Large classroom variance of student age is prevalent in developing countries, where achievement tends to be low. This paper investigates whether increased classroom age variance adversely affects mathematics and science achievement. Using exogenous variation in the variance of student age in...

Education has a fundamental role in promoting the integration of students with an immigrant background in host societies. It can help them acquire skills to participate in the economy, promote their social and emotional well-being and support their participation in the social and civic life of...