My cousin did an assignment once. It was to analyse three poems for meaning. He found two and wrote about them but couldn't find a third that he liked. So he wrote one and analysed it, attaching a copy of all three poems to his assignment with his name attached to the one he wrote. His teacher failed him for that section of the assignment saying that he didn't understand the poem at all. He refused to change the mark when my cousin pointed out that he was the author, claiming that he knew that.
Oddly, cousin still passed as his analysis of the other two poems was good.