Culture & CriticismWhich TV Show Has The Oldest "Teenagers"?The average actor playing a teen role on TV is about 24 — but some shows have more age-appropriate casts than others.By by Anna NorthBuzzFeed StaffPosted on April 15, 2013, 2:48 pmTwitterFacebookLink Glee: 26.38 Pretty Little Liars: 24.36 Teen Wolf: 24.14 The Secret Life of the American Teenager: 23.2 The Carrie Diaries: 21.33 And the average of all the above: 24.25 Tap to play GIF Tap to play GIF