Crystal Blue-Haired Persuasion

Crystal Blue-Haired Persuasion is the twenty-third episode of Season 30 and the season finale.

Synopsis
Mr. Burns cuts children's health care benefits for everyone who work at the Springfield Nuclear Power Plant. As the Simpson family cannot afford medication for Bart's ADD, Marge tries out some healing crystals on Bart as a cheaper solution. She starts selling them to other people and word on the street spreads when the crystals help Bart get better grades, or do they?