According to reports, the man in question was actually a training associate, whose job it is to help the teacher in classrooms. The students were supposed to carry out their project, but this particular student had simply refused to participate and carried on playing his computer game on his laptop. This was what prompted the incident that was caught on video.
The principal indicated that this incident happened a year ago, and the training associate had already been counselled. Many students also came to the defence of the man, indicating that this was an isolated incident, and he was a generally nice man.