What do 8th grade pants look like?
What is the purpose of these idiotic questions? Pants do not have a grade. Pants are merely pants; the students who wear them will be of all shapes and sizes. Whether the student is in high school or in kindergarten is immaterial; pants are pants and all will be constructed the same.
Two legs, a waistband, an inseam, pockets, zippers, elastic waists ~ nothing is limited to a certain age group or size range.