The Facts of Life - Season 4 - Eps 17: Best Sister (1)
Jo goes away for her first ""college weekend"" with her latest boyfriend Jason at Yale. Just after Mrs. Garrett leaves to take Jo there, Blair's sister, Meg, arrives for a surprise visit. Meg showing up unexpected is not the only surprise she has in store, she wants to become a nun. That fact is something Blair has a hard time dealing with. Meanwhile, Jo arrives back early after the car breaks down. She later has a spiritual experience and decides she too wants to become a nun.
About The Facts of Life

Title: The Facts of Life
First Air Date: 1979-08-24
Last Air Date: 1988-05-07
Status: Ended
Rating: 7.011/10 (from 95 votes)
Language: EN
Seasons: 10
Total Episodes: 201
Network: NBC
Genres: Drama, Comedy
Production Companies: TAT Communications Company, Embassy Television
Synopsis
Mrs. Edna Garrett, housemother and dietitian at the Eastland School, teaches a group of girls in her charge how to solve those problems that every teenager has to face.
Cast

Cloris Leachman
Beverly Ann Stickle

Lisa Whelchel
Blair Warner

Kim Fields
Tootie Ramsey

Mindy Cohn
Natalie Green

Nancy McKeon
Joanne Jo Polniaczek

Mackenzie Astin
Andy Moffett

Sherrié Austin
Pippa McKenna