[Building Sakai] Issues with the Tasks, Tests and Surveys tool

[Gerwood Stewart]

We are having a problem with the tasks test and surveys tool and I'd like to know if anyone else has been encountering it?

We got a large quiz that was setup incorrectly (because we assumed something incorrect about the way one of the question types worked) as a result in the second part of the quiz was incorrect and needed to be graded manually.

The first part of the quiz marked correctly and was worth 20 points. (as a side note it would be good to see totals for each part).
The second part was out of 10 and consisted of only one question. This was the part setup incorrectly.

With several students we have tried adjusting their marks by changing the mark attributed to the correct mark and the following happened:

The student had a score of 14 for the first part.
The autoscore for the second was 8.
So the auto mark was 22.
The student go 4 not 8 correct in the second part so we adjusted the mark attributed to 4
This should be fine. Except.

The final score now shows 22.
Removing the manual mark and leaving the autoscore show a result of 26
Adding 0 as the mark for part 2 gives a score of 18 (which is the correct score for the manual remark).

This seemed particularly odd so I removed ALL the auto scores setting them to 0 and the total score show 4.0 as the result.

It would appear that there is a phantom 4 points appearing.

We tried a second student.

They had a score of 19 for the first part.
A score of 8 for the second part.
The autoscore was 27
The correct score for part 2 was 5 .
Adjusting the score to 5 shows the score as still being 27
The correct score should be 24.
Setting the part 2 score to 0 shows the score as 22.
It would appear that this result is out by 3 marks.

It appears that there is some form of bug. In both cases the scores have 'phantom' marks by the amount that the second score is out.

I think this relates to how the scores are changed but I'm not 100% sure.

Any ideas? Does anyone know of a bug that would match this behaviour?

Gerwood
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