[Building Sakai] gradebook2: external tools (samigo/assignment) reported scores handling

[Jon Gorrono]

Wow, this has generated a swift and raucous response :)

7 days is my limit: I can't hold back anymore with my opinions on the matter...

I think that gradebook2 gradebooks in letter grade mode need to
convert points reported to the appropriate letter grades, and use the
letter grade mapping values for the stats

But, since that *may* require some persistence of the converted value,
a sort of tangential need is to have those external grade sources be
re-consulted during mode conversions like from LetterGrade to Points
mode.

IOW, the gradebook2 code should use a mapped grade that fits within
the mode of the current gradebook, and the stat's should be calculated
using that lens.

I am 110% positive we could find a few instructors who would want to
see the stats be skewed by out-of-range values, but it seems to me to
be a bit of a perversion and the desired results better reached some
via other means

On Tue, Jan 18, 2011 at 11:06 PM, Thomas Amsler <tpamsler at ucdavis.edu> wrote:
> In gradebook2, we are trying to determine how to handle scores
> reported from external tools such as Samigo and Assignments.
> Specifically, reported scores that are greater than the grade item's
> max points.
>
> e.g.
> I setup a Samigo assessment with a total points of 100. A student
> earns 100 points and the Instructor gives an adjustment of an
> additional 10 points. So, Samigo reports that score as 110/100 to
> gradebook2, using the gradebook service (edu-sevice). As a side note,
> within Gradebook2, an Instructor cannot assign earned points that are
> greater than the grade item's max points.
>
> So let's assume that Samigo reported the following grades:
>
> Quiz 1 : Total points = 100
>
> Student A : 110/100
> Student B : 87/100
> Student C : 77/100
>
> The problem that we are facing is as follows. How do we handle the
> score that was submitted for "Student A" when we calculate statistics.
> Let's assume that we have a letter grade gradebook. So the assigned
> letter grades are:
>
> Student A : 110/100 : A+
> Student B : 87/100 : B+
> Student C : 77/100 : C+
>
> The calculation statistics uses points to calculate the statistics:
>
> mean: 110 + 87 + 77 = 274 / 3 = 91.333..., which is an "A-". Is this
> expected behavior? I would expect that the mean for (A+, B+, C+) to be
> a B+, by just taking into account the letter grades and not the
> points.
>
> So I am wondering if the gradebook service (edu-service) should allow
> external tools to report scores for grade items that are higher than
> their total points?
>
> Has anybody dealt with this issue?
>
> Best,
> -- Thomas
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-- 
Jon Gorrono
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