Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
We assess whether ethnic minority pupils are subject to low teacher expectations. We exploit the English testing system of "quasi-blind" externally marked tests and "nonblind" internal assessment to compare differences in these assessment methods between white and ethnic minority pupils. We find evidence that some ethnic groups are systematically underassessed relative to their white peers, while some are overassessed. We propose a stereotype model in which a teacher's local experience of an ethnic group affects assessment of current pupils; this is supported by the data.