In the episode titled "Mash Off," lead character Finn outs Santana in a school hallway. ... In a campaign smear ad against Sue, an opponent outs Santana by questioning the coach's morals for promoting a lesbian to team captain. The source of the information: a student who overheard Finn's comment in the hallway.

How did Santana get outed?

Shortly before co-leading a thunderous mash-up of Adele's hits “Someone Like You” and “Rumour Has It” — one of the most memorable musical performances in “Glee” history, and its 300th overall — Santana (Naya Rivera) discovers she will soon be outed as a lesbian because of a classmate overhearing another peer, Finn ...

Why was Santana kicked out of glee?

Glee's back, and the Gleeks couldn't be more excited. ... Schuester (Matthew Morrison) “glitter blombs” Sue during cheerleader tryouts, Santana (Naya Rivera) is kicked out of the glee club after being blamed for setting a purple piano on fire and Glee Project finalist Lindsay Pearce makes her debut on the show.