I've posted the full 20 minute short, the episode is more involved than what I've mentioned about so here is the full plot synopsis from Wikipedia. I hope you enjoy it:
Jackie is hopelessly in love with Miss Crabtree. At the same time, his sister Mary Ann tells their mother that Jackie is in love with Miss Crabtree. Jackie runs off to school without eating breakfast. Meanwhile, Miss Crabtree becomes a boarder in Jackie's home and moves in later that day. Chubby also is in love with Miss Crabtree and practices kissing her on an oversized cardboard statue of Greta Garbo. Then at school, Wheezer tells Jackie, Mary Ann, Chubby, Farina, Donald, and Bonedust that Miss Crabtree was moving into their house. Jackie has mixed emotions about this.
That evening, Miss Crabtree has dinner with Jackie, Mary Ann, Wheezer, and their mother. Mothballs fell into the soup a bit earlier giving the soup a very bitter taste. Later, Chubby stops in to see Miss Crabtree and recites some very romantic poetry. Miss Crabtree asks Chubby where he got all this stuff. He says from Wheezer (who got them from his mother's old love letters). Mother hears this and is about to give Wheezer a spanking but decides not to in the end.