"The Guardian" has published a number of reports, so this is just one among many.
That tells us already that the history of the school is very important to Ofqual. The grades other pupils got in previous years is a huge determinant to the grades this year's pupils were given in 2020. The regulator argues this is a plausible assumption but for many students it is also an intrinsically unfair one: the grades they are given are decided by the ability of pupils they may have never met.
[my emphasis]
A cute way to institute class (read: White) privilege:
The decision to give small classes the ability to receive their teachers' recommended grades is not in the algorithm but led to a boost for elite private schools.
The choice to take the results of the algorithm and further tweak the grade boundaries to prevent overall grade inflation is not in the algorithm but further depressed the larger classes in favour of the smaller.
[my emphasis]
If ever one needed an indictment of Bayes, this be it. Mammy Yokum has spoken.
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