Hello,

In my classroom, 24 students took an essay test in four subjects. Each essay has six questions, and each question has its own level of cognitive complexity from lowest to highest, let's call it C1 to C6. Each question is graded on a scale of 0 - 100. Now, I administered this essay test at two different times, so we can call one the pre-test, the other, the post-test, presuming that, in-between the tests, an academic intervention was employed to test its effectiveness on the students' cognitive capacities. I assume that, in this case, we need to employ the paired t-test; but how can we set up the variables to calculate this? We need to show the gain (n-gain analysis) in the learning outcomes in favor of the higher C-levels. What I mean is, if during the pre-test more students scored high scores for lower C-levels (maybe C1, C2, C3), then in the post-test, more students scored higher for higher C-levels (say, C4, C5, or C6), then we can say that the gain in learning outcomes lean toward the higher C-levels after the treatment was applied. A similar scenario is shown in the context in the image below, although using one subject, pre- and post-tests and although testing cognitive levels from C2 to C6, the principles or core ideas are not too different from this one I have presented. I hope this may serve as a guide. Please, I need to be clear that this is not a quiz; I am testing my methodologies in my research, and I need ideas so I can set up the appropriate mathematical structures that I can use effectively. Thank you!