Which paper do students has better performance?

#1
I have a exam result grade (ABCDE) of a group of students in a subject and also the sub-grade of the paper 1 and paper 2 and paper 3. How can I know or compare which paper do they perform better and which paper hinder the performance?
(Assume paper 1/2/3 are equally important, but how about if they have different weights? )
 

hlsmith

Less is more. Stay pure. Stay poor.
#2
Please provide some actual data so we can follow along or post the syllabus with the grading rubric.
 
#3
ID Final Grade Paper1 Paper2 Paper3
1. A. A. B. A
2. C. B. C. C.
3. B. B. B. C.
4. C. C. C. B.

the data is almost like that…..
 

hlsmith

Less is more. Stay pure. Stay poor.
#4
How many students were there? You may be able to convert all of the grades to their numeric value - like when calculating GPA, then model: final grade = paper1 + paper2 + paper2 using Poisson model.
 

hlsmith

Less is more. Stay pure. Stay poor.
#6
Poisson regression model and you would look at the model estimates for the three predictors. What is the sample size and distribution of grades?