“…Student achievement or test scores are a strong correlate of a range of educational outcomes, such as grades at school, academic programme, school completion, university attendance and years of education (Jencks et al, 1979: 110-11;Marks and Fleming, 1999;Marks et al, 2000;Sewell et al, 1969;Sewell and Shah, 1967;Teachman, 1987). Student achievement also relates to a range of labour market outcomes including unemployment, unemployment duration, occupational status and earnings (McIntosh and Vignoles, 2001;Lamb, 1997;Marks and Fleming, 1998;Murnane et al, 1995). Therefore, social class inequalities in achievement are likely to be reflected or possibly magnified in subsequent educational and labour market outcomes.…”