I see that grade allocation has now joined general election polling and the COVID virus as a topic where people can get long, technical sounding, but factually wrong, threads widely shared.

There's a 123 likes for a tweet where somebody claims to be reading Ofqual's technical guidance, yet they are apparently under the impression that GCSEs still use letters rather than names as grades.

875 likes for the start of a thread claiming that if the historical pattern includes 0.2% Us (i.e. 1 in 500) and 99.8% A*-B, then a class of 20 will get at least one U grade.

What?

Also over 800 RTs for it, many with comments saying things like "it's a scandal".

Yes, it would be. But why would you actually believe it?

I mean, I'm not going through the technical manual doing the calculations, but neither has the writer of the thread.