There seems to be a common theme among some questions, where an instructor is unsure whether course policy should be strictly applied. I'd like to suggest the creation of a leniency tag. The tag summary would say:
Seeking advice about whether policy should be strictly applied, or whether exceptions should be made for special cases
Examples of questions where such a tag could apply:
Currently tagged: grading
Currently tagged: teaching
Currently tagged: policy
There would be significant overlap with teaching, but I think that the questions above all relate to a specific teaching concern, enough to warrant the creation of a tag.