Wikipedia
Prom-asaurus
"Prom-asaurus" is the nineteenth episode of the third season of the American musical television series Glee, and the sixty-third overall. Written by Ryan Murphy and directed by Eric Stoltz, the episode aired on Fox in the United States on May 8, 2012, and features McKinley High's senior prom.
Prom-asaurus attracted 6.67 million American viewers during its initial airing and received a 2.7/8 Nielsen rating/share in the 18–49 demographic, up significantly from the 2.5/8 rating/share and 6.01 million viewers of the previous episode, " Choke", which was broadcast on May 1, 2012.