“…Indeed, the issue goes beyond purely academic speculation as it is directly related to policies concerning school segregation. While most previous studies on this topic have been conducted in the United States with secondary school students (Bankston and Caldas, 1998;Rumberger and Palardy, 2005;Ryabov and Van Hook, 2007), the issue has become increasingly popular among European sociologists, as indicated by a growing number of publications in the European Sociological Review directly or indirectly related to the impact of school composition on academic performance (Van der Slik Driessen and De Bot, 2006;Boado, 2007;Fekjaer and Birkelund, 2007;Biedinger, Becker and Rohling, 2008;Brännström, 2008;Kauppinen, 2008) and furthermore there is a growing body of research in different countries with primary school pupils (Strand, 1997;Driessen, 2002;Van der Slik et al, 2006;Dumay and Dupriez, 2008). With a few exceptions, these studies have demonstrated that the socio-economic composition of primary schools is related to academic achievement, that is, pupils going to schools with a higher share of children from a higher socio-economic background were found to perform academically better.…”