Shocking footage inside a Las Vegas high school shows a substitute teacher and a teenage student engaged in a physical altercation, exchanging punches following a heated classroom dispute over a reported slur witnessed by other students.

Re'Kwon Smith, 27, is accused of brawling with the Valley High School student on Thursday when Smith asked the teen, who reportedly shouted out a racial slur, to leave the classroom, according to media reports.

The confrontation turned physical when the student placed his hands on Smith.

In the recently obtained footage, both parties can be seen swinging at each other before Smith connected several times with the student, eventually knocking him down.

After knocking down the unnamed student, Smith stood over him, yelling, while the student curled up defensively behind his hands. "You're going to jail, [slur]," the laughing student reportedly shouted as he was escorted away. Valley High School principal Kimberly Perry-Carter wrote in a message to parents: "We are aware of an altercation involving a staff member and a student. Please know that CCSDPD is investigating the matter."

Smith, however, was charged with several offenses, including battery resulting in serious bodily harm, assault of a school pupil on school property, interfering with a student from attending school, and threatening to do bodily harm to a public school student.

The student was also arrested on unspecified charges. Thursday's incident is just the latest in a string of violent encounters between students and teachers in classrooms across the country.

Watch the video from Instagram user @Vegas.Bartender below: