The phrase "school teenager" refers to a young person who is attending school and is in their teen years, typically between the ages of 13 and 19. Full definition
I've always looked to his work because, more true for his films that he directed than those he just wrote, he told the story of high school teenagers better than most. (gmanreviews.com)
Kids don't even realise they are in hand me downs until they are too cool for school teenagers. (naptimenatter.com)
You're not going to talk to a high school teenager using the same language you'd use for middle - aged lawyer audience. (elearningindustry.com)