Bart can't control his feelings when he gets a new teacher. Meanwhile, Lisa befriends an octopus.

When Bart's latest prank leads to chaos at Springfield Elementary, Marge and Homer dream of a world in which their rambunctious son was never a Simpson.

When Milhouse's Dad, Kirk, takes exception to a school history lesson that paints one of his ancestors in a bad light, Kirk goes on a crusade to censor and control the school curriculum -- a crusade that Homer co-opts for fun and profit.

Marge feels an overwhelming dread of the empty nest.

A parenting disagreement between Marge and Luann Van Houten escalates into a life-or-death struggle for survival.