It's so outrageous. I would reeeeally like to hear the teacher's explanation for showing it. Was it a male or female teacher? Gay or straight?
There's gotta be some logic to it.
Well, here in Germany - in the example "my niece's Sunday school" - is part of the "leaving childhood experience".
If I had shown it at schools (could show only 'Philadelphia' in those days), it would have been part of the sexual education.