Lisa's Substitute

When Lisa's teacher Miss Hoover gets Lyme Disease, Mr. Bergstrom takes over the class. Lisa finds Mr. Bergstrom's teaching methods incredibly inspiring and discovers an entirely new love for learning, but when Mr. Bergstrom leaves, Lisa doubts that anyone else in her life (including her own father) can be the man that Mr. Bergstrom was. Meanwhile, Bart runs against Martin Prince for class president.