Reply to Problem with GPA Ranking Calculation- what to do

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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]OP, the credits figure into both the numerator and the denominator. If your school uses a fairly common system I’d double check your own work first.

In the numerator, each course should be ((grade + weight) x credits)). The denominator is all the credits summed.

It sounds to me like, in computing the numerator, you might have forgotten to multiply each course by the number of credits. [/quote]

Thanks for your response. I think that would make more sense. Here is the actual calculation:

Weighted Average (WA) =

[ Sum of (Grade x Credit) + Sum of (Grade x Credit x Weight)]  [b]DIVIDED BY[/b] Sum of Credits Attempted [/quote]

Using your formula (which btw is the same of mine because of the distributive property), I computed the GPA for a student who took five unweighted courses, plus a one or one-half credit elective that is unweighted, weighted at +0.5 (honors), or weighted at +1.0 (AP). For simplicity, this student gets As in everything.

In this first equation the one-half credit course is unweighted:

((4x5.5) + (4.0x0.5x0))/5.5 = 4

Naturally, we get the same result with an unweighted full credit elective:

((4x6) + (4.0x1x0))/6 = 4

Now let’s try a half-credit honors elective:

((4x5.5) + (4.0x0.5x0.5))/5.5 = 4.182

And a full-credit honors elective:

((4x6) + (4.0x1x0.5))/6 = 4.333

Now here’s a half-credit AP elective:

((4x5.5) + (4.0x0.5x1))/5.5 = 4.364

And the full-credit AP elective is highest of all:

((4x6) + (4.0x1x1))/6 = 4.667[/quote]

Yes, you are right regarding the calculation being the same. Our GPA values and weighting are a little different. I am going to run the scenarios you listed and see how it works out. This is extremely helpful and I really appreciate your taking the time to calculate these.[/quote]

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