PHILADELPHIA – A Philadelphia teen faces an assault charge after he attempted to fight his teacher, who chastised the student for coming to class late.

School officials will not identify the teacher or student at Abraham Lincoln High School who were caught on video duking it out in the hallway for several minutes around 9 a.m. Monday, the Philly Voice reports.

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Police told WPVI the student, 16, was late to class, which prompted an argument with his English teacher, 44. The teacher reportedly tried to call security and stepped into the hallway to flag down another teacher when the student allegedly attacked.

“So he pushed him and (the teacher) pushed him back and then the kid just swung on him,” student Austin Augustine told the news site.

A video posted to YouTube shows the two trading blows in the hallway before the teacher momentarily holds the student in a headlock. The student broke away and the fight resumed until the student eventually relented, shouting “you tough, right? You tough, right? You a grown ass man.”

“It’s outrageous because of the simple fact that the video was going on for like two minutes straight but ain’t nobody break it up,” student Sianni McLaine told NBC Philadelphia. “Everybody was just sitting there.”

McLaine was among dozens of students who witnessed the fight. The YouTube video was viewed nearly 40,000 times in one day.

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School District of Philadelphia spokesman Lee Whack refused to discuss the details of the incident with the media.

“We take the safety of our students and our teachers very seriously,” he said in a prepared statement. “Violence of any kind in our schools in unacceptable, and will not be tolerated. We are working in cooperation with the Philadelphia Police Department and we ae conducting our own investigation to gather all of the facts regarding this incident.”

The teacher, who has not been charged with a crime, required stitches after the fight. The student was charged with assault, WPVI reports.

“He was trying to detain him if you couldn’t see in the video,” Lincoln junior Laura Berry told NBC Philadelphia. “I don’t get why nobody tried to break it up.”

Parents and guardians were also shocked by the brawl.

“You don’t fight your teacher. I come from the old school. We did not fight our teachers,” aid Mary McCoullum, grandmother of a Lincoln High School Student, told WPVI. “We did what we had to do and we did what we were told to do.”

The incident, of course, prompted outrage online.

“Teacher protected himself. Student should be jailed. End of story,” lisa posted to the WPVI comments.

“I feel sorry for all the kids that are desperate for a proper education, but get stuck in zoos like Lincoln High,” Mcfc2014 wrote.

“So why is the teacher under investigation? He was attacked and defended himself. It seems school securities response failed here. Investigate them,” Imported ham too added.

“Oh yeah, that student really gave it to him. The little turd was trying to hurt the teacher while the teacher was trying to stop the little turd from hitting him. Had the teacher let it fly that little turd would have been on the ground, bleeding. Kudos for the teacher that he could show restraint, especially with the idiot students chirping in from the side,” CVN65 posted in the Philly Voice comments.

“As a teacher in a high school where this has never even come close to happening, I am amazed by this story and video,” Jack wrote. “Wow – I think it offers tremendous insight into the causes of our problems as a society.”