The pupil who was attacked during the fight on Friday had been identified as 21-year-old Grade 11 student Sibusiso Madonsela, according to the Lowvelder.
Madonsela had sustained minor injuries and was treated at Barberton Provicial Hospital, where he was discharged on the same day.
The cellphone footage, presumably recorded by a pupil at the school, shows the two fighting, after which another pupil carrying a knife joins in on the tussle.
Madonsela is seen being stabbed a number of times with the pupil carrying the knife.
Police reportedly urged Madonsela to open a case as the school continues to probe the matter.
Last year, a video showing a KwaZulu-Natal pupil being assaulted and stabbed by a group of other pupils at the Isizimele High School went viral.
Police confirmed that the 18-year-old involved had died in a local clinic after the attack in October, according to the SA Press Association.
A study by the Centre for Justice and Crime Prevention (CJCP) found that 15.3% of children at primary and secondary schools have experienced some form of violence while at school, most commonly threats of violence, assaults and robbery.
Analysis of the research findings highlighted the strong association between the home environment and violence at school.
These factors, together with pupils’ experience of corporal punishment at home and at school, all impacted significantly on the likelihood of violence at school, the study found.