2.1 degree question

What university are you in?

Your percentage score doesn't quite reflect what your GPA is, here is a breakdown of how GPA is calculated in UCD for example: (the first two % scores are the range for that grade and the third score is the median % score)

A+ 76.67 100.00 78.33
A 73.33 76.66 75.00
A- 70.00 73.32 71.67
B+ 66.67 69.99 68.33
B 63.33 66.66 65.00
B- 60.00 63.32 61.67
C+ 56.67 59.99 58.33
C 53.33 56.66 55.00
C- 50.00 53.32 51.67
D+ 46.67 49.99 48.33
D 43.33 46.66 45.00
D- 40.00 43.32 41.67
E+ 36.67 39.99 38.33
E 33.33 36.66 35.00
E- 30.00 33.32 31.67
F+ 26.67 29.99 28.33
F
(FM)
23.33 26.66 25.00
F- 20.00 23.32 21.67
G+ 16.67 19.99 18.33
G 13.33 16.66 15.00
G- 0.02 13.32 11.67
NG - 0.01 0.00

So 63% might put you in the range of about a B average, which is a middle 2.1 degree. Below (again, for UCD) is the grade equivalent of GPA value:

A+ 4.2
A 4.0
A- 3.8
B+ 3.6
B 3.4
B- 3.2
C+ 3.0
C 2.8
C- 2.6
D+ 2.4
D 2.2
D- 2.0
E 1.6
F 1.0
G 0.4
NG 0.0

So your GPA might be roughly 3.4

I know in terms of UCD, a repeat caps your GPA at 2.0 for that module, so in your situation, if you had a good middling 2.1 and had one module capped at 2.0 GPA, you should still hold your 2.1 as you are not borderline.

I presume each college might be different with their GPA calculations, but if you look at your transcript, just convert all your grades into GPA scores, find out what a repeat module is capped at (if at all) and find the average. But a fail doesn't mean you can't get your 2.1 as long as your grades are good enough, but it will drag your GPA down.

if you repeat an exam you lose the right to a honours classification