At Springfield Elementary School, Bart is busted for vandalism by Principal Skinner after the class genius, Martin Prince, snitches on him. To get revenge, Bart surreptitiously switches exams with Martin. When the school psychologist, Dr. Pryor, studies the IQ test results, he labels Bart a genius. Homer and Marge enroll him in a school for academically gifted students. Lisa is not fooled by Bart's supposed genius and still thinks he is a moron; Skinner shares her belief but is pleased Bart no longer attends Springfield Elementary.