[poppow]

Appreciate the idea behind the article which may have value, but the data types seem ordinal? 1.0-4.0? is that trying to mirror US GPA system. Normalized based on what? p-values are an archaic only useful for MBAs and Med students.

[mgirdley]

We presumed and used a normal distribution for each class.

The numbers were arbitrary. Just what felt easier to understand for the staff.

[poppow]

Normality on ordinal scale data. You've done the equivalent calling functions expecting numeric input with ordinal data. https://en.wikipedia.org/wiki/Ordinal_data