I entered a formative grade today. It is a combination of assignments we did over the last month. That may sound like a bad teacher, but I was planning on using the activities for my own data on inferencing. But as I become used to the formatives and summatives, I realize that the skills assessed in the activities were formative to the summative assignments. I only took the average of the assignments. If one was missing, it was missing, so I skipped it in the average. If you want to know the exact scores, e-mail me. I can send you the data in my spreadsheet.
(I found this image today. It is the epitome of middle school, and maybe life in general.)