Episode 15: Hot for Teacher
Matthew's affair with Brooke is explored privately, as sudden attractions slowly surround, but will this relationship last that long and will there be any detriments to this situation.
- Hot for Teacher by Van Halen. Sung by Matthew Humphrey.
Episode 17: Almost There
Regionals is ahead, and the battle between New Directions, The McKinley Swagettes, and Vocal Adrenaline begins as they all fight to the finish. Meanwhile, the student-teacher affair at McKinley shares risky consequences, and Kendall becomes devastated by the cracks in her relationship with Kai, and Tiffany tries to push her way back into New Directions.
- Almost Home by Mariah Carey. Sung by Tiffany Winters and New Directions.
- Betty Woz Gone by Stooshe. Sung by The McKinley Swagettes.
Episode 18: Temptation
Episode 19: Falling Slowly
Cole and Kaleesha's relationship grows closer and closer, but Cole is confused over his feelings for her as the past surrounds him with Samantha. Sue and Holly rise against each other and it causes havoc in McKinley. Salvatore's feelings for Cole's cousin comes back to haunt him. Deno attempts to do something to overcome his autism issues, and Gretchen is part of it in a bad way.
Episode 20: Battle of the Sexes
Holly allows the girls and the boys to compete against each other to sing girl and boy band songs in the 90s to 2000s.
- Backstreet Boys, NSYNC, Boyz II Men, 98 Degrees, and New Kids on the Block are sung by the boys.
- Spice Girls, Destiny's Child, TLC, 3LW, etc are sung by the girls.