The original question was how we would address changing policies within a classroom. I think Taryn Herera has a good response, but it indicates much more anticipated involvement by the school in the grading procedure than I am used to.
I have not undertaken changes of any great significance for some time. But my approach became readiical some years ago. I actually simply did this and I explain it each year to the students because it is unique.
One explanation is never compleely adequate. And I try to avoid saying anything like, "We discussed that earlier."
Even though my perspective… >>>