I've come across some more local videos of youth at the Smyrna High School with this humble description.
Smyrna High Schools "Freshman Initiation Day" There Was A Huge Mosh Pit In The Back Of The School.Enjoy
I like the yells of 5.0. when someone spots either a school resource officer, or a smyrna police officer.
The youtube account holder also has 4 more videos titled as "Bathroom Mosh" 1, 2, 3, and 4 and described as "Bathroom Mosh Pit 1 During Freshman Initiation Day at Smyrna High."
Looks like the same fun I had when I was young.