what episode of glee do they sing no scrubs
Sadie Hawkins (Glee) At the dance, the guys of New Directions perform "No Scrubs", followed by the girls' performance of "Locked Out of Heaven". There, Sam reveals to Blaine and Finn evidence that he has acquired that Warblers captain Hunter Clarington (Nolan Gerard Funk) had the Warblers use steroids to enhance their performance, which Finn decides to use against the Warblers.
Shooting Star (Glee) As the glee club gathers in the choir room, two gunshots are heard, and the school goes into lockdown, with Brittany trapped in the bathroom and Tina stranded outside because she was late. Will and Beiste try to keep the students calm, but Sam decides to go after Brittany. Will then leaves them in Beiste's care and brings Brittany and two other students into the choir room. Meanwhile, Kitty breaks down and admits that she altered Marley's Sandy costumes and apologizes to her, and the two embrace. Ryder calls Katie's phone, and it rings inside the choir room; Artie Abrams (Kevin McHale) encourages the glee club members to record their goodbyes to their families in case they die. However, after several hours in lockdown, the police clear the area and the students are allowed to leave.