Grungie
V.I.P. Member
Even a lot of American shows aimed at a younger audience, or at least sitcoms, take place in high school. Teenagers are the largest demographic to target, so that makes an easier to put them in that age. They tend to start having jobs, or more allowance, than a children, so you appeal to the audience with the most buying power.
Hell, even a lot of Seinen stuff still star high school students.
Hell, even a lot of Seinen stuff still star high school students.