WATCH: Algebra Teacher Swears, Throws Furniture In Classroom Meltdown

An 11th-grade algebra teacher at McGavock High School in Nashville, Tenn. shocked school officials and students last week when he had a full meltdown during class, screaming at students and throwing furniture.

One of Donald Brian Wood's students captured the tantrum on a camera phone and posted the video to YouTube.

WATCH:

Wood's sister released a press statement to The Tennessean in response to the video:

"My older brother, Brian Wood, had what appeared to be a nervous breakdown in his classroom while serving in his role as a Math teacher at McGavock High School. No one was physically harmed or injured, including him, and for that we are deeply grateful."

Principal Robbin Wall told The Tennessean that Wood's unruly behavior was an anomaly:

"I'm not a doctor, but what we saw was a little bit of a nervous breakdown,'' Wall said. "I understand he's doing better now. It's sad, he's a very good man. Always positive and has good things to say. I've never seen him be negative or even use profanity, so it was far out of his normal pattern.''

Barbara Fisher, mother of two former students of Wood, revealed to the The Telegraph that McGavock had a history of "disciplinary problems among students." Fisher speculated:

"I am really not sure where the blame really lies. The students were egging him on but he didn't know how to handle it."

Wood, who is currently recovering at the Vanderbilt Medical Center, is on "indefinite administrative leave" according to Metro Nashville Public Schools.