I heard a public service radio ad the other day that went something like this: “if a teenager or an adult collapses, here’s how you do cpr”
Teenagers don’t have heart attacks.
Until proven otherwise, blame the shot.
I took a look at my county’s vax statistics. ~70% of the 12-17 age group are fully vaxed. It doesn’t say if they are boosted or not. Like I said, this is the first time I’ve heard of a young student dropping dead in a classroom.