Most teens spend their days shuffling among classes that someone else has told them they have to master. They don't really get the importance of what is being forced upon them. The recognition of what is ultimately important usually doesn't come until years, even some decades, later.
Uncertainty rules their world. Their brains are not going to be fully functionally developed for another decade. So they process what the adults in their lives tell them and come up with their own world order. It's a world order that doesn't matter after they graduate --- either from high school or from college --- but while they are in the thick of it, they try to make sense of it all.
I think that's what draws them to the field.We all remember our own high school days, either with wistfull longing for their return or with gratitude that it's long over and we're on with our lives.