For example, I notice one thing with many of the people I talk to, to this regard: high school is where the transition from "YEAH MAN, I'm going to be a pro athlete when I grow up dude" to "I thought physiology was pretty cool in bio class, so I'm going to go and do premed."
But of course, this doesn't work for a lot of people. It doesn't work with me, because I've personally already have found my passion (and it has been for three years.) It also didn't work for Richard Branson.
Everyone complains about high school. And there's definitely a lot of rote memorization. But for some people, they might not gain this important "oh, this is actually pretty cool" moment.