What episode in glee when they find out sam is homless?

Sam's homelessness is not explicitly revealed in a single episode of Glee. His situation is alluded to throughout the series, but it's never a central plot point.

Here are the key episodes where Sam's financial struggles are hinted at:

* "Home" (Season 1, Episode 16): Sam reveals he is struggling financially and doesn't have a car.

* "The Sue Sylvester Shuffle" (Season 2, Episode 20): Sam is shown living with his dad, who is a struggling gambler.

* "The Purple Piano Project" (Season 2, Episode 10): Sam is forced to leave glee club due to financial difficulties.

* "Furt" (Season 2, Episode 14): Sam asks for a job at the school so he can afford to pay his bills.

While Sam's financial struggles are mentioned throughout the series, they are never explicitly shown. His homelessness is a recurring theme, but it's never directly addressed.