Could go the other way. Would you bet against Apple already having people pushing iWatches and HealthKit/ResearchKit data as being mandatory parts of sports training? They _know_ the nerds are going to buy smart watches, but quite likely Android Wear or Pebble ones. If you wanna make expensive Apple ones cool, make sure every football player has one on his wrist, and all their girlfriends are giggling away in class getting "touched" by them. then see how the school administration goes trying to ban them...
There is a huge group of users that put a high value on continuous connectivity.
For the high school kid, a limiting factor may be that schools will forbid them from wearing a watch in class.