Hi Gerald,
thanks for the explanation and the screenshot. I see exactly what you mean.
In the table of attempt results, the "completed" status for the readings seems reaonable, but I can imagine that the students are slightly perplaxed by the "0%". I am pretty sure we can remove that, and replace it with either an empty table cell, or a dash "-".
I will add this to the list of improvements to QuizPort I intend to make later this month (Aug).
many thanks for suggesting this improvement 
Gordon