How does UW recalculate GPA?

How does UW Madison recalculate high school GPA?

On their admissions page it says “typical unweighted academic GPA’s are between 3.8-4.0.”

Does a fine art class count in unweighted GPA? They list that 2 credits of fine arts/other academic classes are needed for admissions- so will they calculate GPA with fine arts?

I figure they don’t include PE.

That has been the question for decades.