These people are still out there. When I was in high school we had the normal people, then people who took advanced placement stuff, then the "super nerds" who were at the top of all the advanced placement stuff with perfect grades, and then there was this one guy who was most of the way through all the advanced math classes at the nearby university. Same guy was in one of my English classes, and was failing. More or less he couldn't be bothered.

Sadly the later part of your comment may hold - I don't remember what ended up happening with him, whether he graduated high school or what. Hopefully at that level you just disappear into academia and not off the face of the earth in general.