I use this mark for the five and ten week reporting periods for students that are in the "D" or "F" grade range. For the 15-week report card, I expand this comment to include students who have a "C".

I started doing this a number of years ago when a group of students decided to take it easy the last several weeks. By using this comment, it serves as a reminder that there is still a possibility of failure.

To repeat, this does not mean that a student will fail the course, but that a possibility does exist. Please keep completing your work.