It's always nice when we find we have time to look at how things appear; hopefully it's a sign that we're beyond the really nasty bugs. So this is about appearance ... which does matter.
We are of the view that the bold green and blue styles applied to Group and Overall averages is effective in setting these rows apart from the rows of students data. We are now suggesting that we might take a similar approach to the appearance of Category and Course totals.
In the attached we would suggest that the formative average and summative average could be shown as bold green and the course average as bold blue.
What do you think?