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This is a v unfortunate consequence of these past few days. Teachers are trusted, all the time, by student, parents & even govt. But assessment like A-levels & GCSEs requires a standardisation on a national scale that no one person, no matter how well trained, could do. https://twitter.com/lbc/status/1295660790574350337
Teachers may be excellent at judging the relative success of their own students (&, indeed, the ofqual algorithm accepted teachers’ *ranking* of their students without question), but comparing those students to rest of their yr group nationally is something no individual can do
The only thing that can fairly compare all people in a particular cohort is an examination which they all sit in common conditions, marked to an agreed standard & even that is v hard to do well, which is why exam boards spend millions getting the Qs and mark schemes just right.
Many schls & esp many schl trusts (such as one I work for) maintain large data sets based on high quality assessment, which is why we are confident of our CAGs. But teachers had that data to hand in determining CAGs, not because of a lack of trust, but to support fair judgements.
