What is the fair way to grade in this pandemic?
It depends, of course, on what you mean by &quot;fair&quot;. If you mean correctly distinguishing top performers (high marks) from average or low performers, I don't think it is really possible without assessment. Certainly depending on a mid term exam is not fair.
But if, by &quot;fair&quot;, you mean &quot;not disadvantaging any student&quot; then something like a universal &quot;pass&quot; for everyone is fair. This would come with a note on any transcript that grading was cancelled for this term.
One university in the US has decided that there will be three possible grades for the term just ended: Pass, Fail, and Incomplete. But even there, it depends on some sort of assessment to make the distinctions.
Even cancelling the term and returning everyone's money isn't fair.
The bigger problem, of course, is that we (myself, at least) no longer trust that this situation is temporary and we may need a fundamental re-thinking of both course delivery and student assessment. But, in the short term, some sort of bridge to whatever will follow is necessary.
Chaos requires extraordinary action.
One thing that can be done, I think, is an informal, personal, assessment to each student making suggestions about what they have missed and where they need improvement to continue. This doesn't scale well, of course. But even an ungraded &quot;exam&quot; will give the student some feedback that they can use, if they choose, to advance their education. But making &quot;grading&quot; decisions on such things is difficult to do as, then, cheating is difficult to control.