Those that actually brought the gay porn into the schools should have been dinged for it. If Benny Dover brought it in to make fun of the guy, then Benny should have been nailed for it. Pun intended. It’s not like he didn’t have a choice on viewing it and bringing it in. “You have to make an appointment for that folks” as Sam Kinison would say.
When Sarah sends it to Sharon who sends it to James on the football team, only one person brought it to the (possibly offschool) environment (and another shared it). The chain of distribtion could flow from there. I doubt they all went to the site, enrolled, and paid for copies.