“…These include high status subjects, such as separate sciences, which schools often restrict to the students they judge to be most able. Sometimes these judgements refl ect genuine differences in achievement, but research, both quantitative and qualitative, has consistently shown that teachers' preconceptions about certain groups also play an important role, especially in relation to social class and ethnic origin (Araujo, 2007;Ball, 1981;Bradbury, 2011;Commission for Racial Equality, 1992;Gillborn, 2008;Gillies & Robinson, 2012;Hallam, 2002;Hallam & Toutounji, 1996;Rollock, 2007;Strand, 2012;Sukhnandian & Lee, 1998;Tikly, Haynes, Caballero, Hill, & Gillborn, 2006;Wiliam & Bartholomew, 2004). Put simply, teachers' expectations of black students and their white working class peers tend to be systematically lower than warranted by their performance in class.…”