The Spinach Scholar Popeye the Sailor : Season 1 Episode 150

Olive tells Popeye that she's through with him unless he goes back to school and gets an "edumacation." Popeye enrolls in school and he is placed in the eighth grade. Popeye's many educated guesses cause him to become the laughingstock of the entire school. Each time that he attempts to answer a question in class, he's demoted. Poor Popeye can't cut it and goes through each class (from high school to kindergarten). Here, he's asked to spell "CAT." In desperation, he eats his spinach and spells it right, thus graduating from kindergarten. When Olive meets him after school, he brags that getting an education was very easy- he went through the whole school in one day.