by Hal Erickson
synopsis
Anxious to earn their high school diplomas, both Sam (Ted Danson) and Coach (Nicholas Colasanto) sign up for a night-school geography class. Soon, however, an angry Coach discovers that Sam is angling for an "A" by romancing his attractive teacher -- something that arouses the ire of Diane (Shelley Long), as well. Back at Cheers, Cliff (John Ratzenberger) prepares for a bit of vanity surgery.
