Earlier quoted context omitted.
40% of high school students don't go to college (of any type). Of those, only a tiny portion are focused on elite universities. Many are just going to Long Beach State, University of Redlands and other 4 year schools that you've never heard of. They have lax admissions. Among adult Americans, only a third have bachelors degrees. Certainly the high pressure scholastic environment of certain high schools is not common.
A good point that exposes some major bias behind my anecdote. With that said, if these expectations start at elite schools and slowly trickle down, would that not cause a rise in the aggregate across all teenagers over time?
Seems like a strong assumption that it necessarily does splash damage beyond a certain cohort. I went to a public HS of 4K in the 00s only AP Juniors/Seniors were concerned with this kind of thing and AP kids were only friends with other AP kids (for obvious reasons); I'd doubt that've changed by 2012.