How to more than one scale (4.0 scale and 4.3 scale)

Question

Dear All,
In our case( Korea Sogang University) customer used 4.0 scale for module appraisal but changed to 4.3 scale some years ago.
In this case how can we use two scale ?.
some students have 4.0 scale appraisal and 4.3 scale also.
I want to total GPA as 4.3 scale bases becuase it is used currently.
regards,
jin dal

Answer 1

Jin Dal,
I think you can simplify this, depending on how you have actually defined the scales.  In an ideal world, you would have set up the scales in the following way:
<u>KRDO (A-F)</u>
A = 90,000
B= 80,000
C= 70,000
etc., or some similar scale values
<u>KRG1 (4.0 scale)</u>
4.0 would map to 90,000 (NOT 100,000) - This means that the 'upper limit' of that linear quantity scale is something other than 4.0.
<u>KRDR (A-F with +/-)</u>
A+ = 93,000
A0 = 90,000
etc.
If you did this, then you would not even need scale KRGV.
Here is the problem.  You cannot just go and change your scales now to this simple model.  Why?  The appraisals you have already stored contain the absolute value (i.e. the value on the 100,000 scale).  They would then all be wrong, unless you went into each appraisal and re-stored it.
I mainly describe that scenario for everyone else out there setting up their systems.  Leave some 'headroom' above you current maximum score in the GPA!  You may need it later.  This is described in the Base Configuration Cookbook in my sticky post.
Unfortunately for you, I suspect you set up your scale KRDO with A = 100,000, and your linear scale KRG1 with 4.0 as the highest values (= 100,000).  That means you really do need the extra 4.3 scale of KRGV.
You will probably not want to keep going into the IMG to change the scale for GPA.  In fact you might have a user bring up the performance indices for a pre 2001 student, and then immediately jump to a post-2001 student!  So, here are your possible solutions:
1) Just have two different performance indices: one for pre-2001, one for post-2001
2) For your GPA PI, use the 4.3 scale.  However, then you need to change your PI Calculation itself to look at the appraisal records.  For the pre-2001 students, you need to actually CHANGE (in memory; not in the database) the assigned grades from A to A0, B to B0, C to C0, etc.