Salvador Dali

He never graduated.

An excerpt from the article 23 facts about Salvador Dali
While studying at the Royal Academy of Fine Arts in Madrid, he was known for his eccentric behavior and dressing in the style of the nineteenth-century British dandy. He never finished school, was thrown out twice. First time for participating in a student protest, the second time just before the final exams. He believed that he was better qualified than people who would examine him.