> Which can be explained by teachers assessments being too optimistic
This can also be explained by teachers assessments being an accurate representation of students ability, but students traditionally not faring as well in exams as their ability would suggest due to exam taking being an additional unrelated skill.
fwiw though, you only need to look at some of the outliers to see that the algorithm failed. It's all very well to say that it produced a consistent result in general, but each result specifically applies to an individual person so needs to be fair to each person as well as in general.
This can also be explained by teachers assessments being an accurate representation of students ability, but students traditionally not faring as well in exams as their ability would suggest due to exam taking being an additional unrelated skill.
fwiw though, you only need to look at some of the outliers to see that the algorithm failed. It's all very well to say that it produced a consistent result in general, but each result specifically applies to an individual person so needs to be fair to each person as well as in general.