Abstract:
An increase over time in the proportion of young people obtaining a degree is likely to impacton the relative ability compositions (i) of graduates and non-graduates and (ii) acrossgraduates with different classes of degree award. In a signalling framework, we examine theimplications of this on biases across cohorts in estimates of educational returns. In anempirical analysis, we exploit administrative data on whole populations of UK universitystudents for ten graduate cohorts to investigate the extent to which early labour marketoutcomes vary with class of degree awarded. Consistent with our theoretical model, we findthat returns by degree class increased across cohorts during a period of substantial graduateexpansion. We also corroborate the empirical findings with evidence from complementarydata on graduate sample surveys.