The after school programs that I have found, while they say they take kids up til 5th grade, really only have little kids and are run more like pre-schools.
Teenagers resist being dependent upon and controlled by another, while they also know they must navigate the adult world and create their role in it. Young.
Before and after-school programming for kids pre-k through high school available Boys & Girls Clubs created especially for teens, apart from the younger kids.