Student reflection blog from UVM. (Link)
From the syllabus:
A: To earn an A on the blog component of the course all assignments must have been completed and comments posted by the assigned deadline (in this case, within one week of the date of the blog posting). Comments are thoughtful, fully answer the question asked, and, if specified, take into account the comments of other students.
B: All assignments completed, mostly on time. Thoughtful comments, though perhaps briefer and less engaging than those that merit an A.
C: Most assignments completed, primarily at the end of the semester and/or comments are short, perfunctory answers to the blog prompt with little consideration of the comments of others.
D: Only partial completion of the assignments and comments show little commitment to making a contribution to the discussion.
F: Failure to complete more than 50% of the assigned blog questions.