Truancy

Clearly, these are severely depraved teenagers (actually, they look about 25 or so--especially Stretch lurking in the back there). You can tell this by: the leather jacket, the rumpled slacks, the pointy bra on the redhead (is she wearing lipstick--double Hell points), the wanton betting on a game of chance (coin flipping--the preferred sport of Hell), the way they are lurking outside the school gate, and much, much more.