Maybe my question should have been "how do you determine the grade of a participant?"
Okay, that is accurate. Yep, it depends on post quality.
Any chance on clarification? This whole 'here's a rate and succes with getting "better"' is slightly frustrating

lol, we cannot write an essay about 50 participants every week, about their post quality. That is why we grade it. It is indicative info so that participants can know where they stand.

Grade is relative. If your post qualiy seems good, you will get a good grade. Above average, higher grade. If someone makes useless posts, lower grade. C,C+ is average. could improve.

I didn't exactly get what you asked. If this answers your question, please confirm/reply. Else do restate the question.
Thanks
