There needs to be, I think, a localized approach.
The clip - purporting to be a trailer for a film set to be released two weeks ago - has been widely shared on social media since last month.
In another, a teacher walks into a classroom and shortly after she leaves, the camera focuses on a boy's crotch.
In one scene, a pupil is seen standing on a teacher's desk with the words "Grandma is not here" appearing above his head.
Orban School is a Christian-based private school that offers pre-primary and primary school education.
And also known as one of the oldest schools in Johannesburg.
He said he also spoke to the pupils in the video and they had various excuses, including that the pictures were not taken on school premises, and the white powder being sniffed had been chalk dust.
The show dealt with rape, violence, drug-dealing, harassment and a school on the verge of anarchy.