I would imagine most "popular" high school kids have extremely libertarian social views (legalize all drugs, abortion until 9 months, etc) and don't care about economics. It's hard to be the most edgy with economics, as no one cares too much at that age. But honestly, I think a lot of the popular boys supported Hillary just so the girls wouldn't get mad, lol.
Honestly that was part of my motivation for supporting Obama in 2012 when i was a junior in HS. All the girls were pretty much for Obama excluding the ultra religious white ones. My school was like 85% female and probably 50-60% black as well so it was very Democratic leaning. It would have eliminated most of my dating options to get labeled a racist or misogynist lmao