A police officer was injured and two state vehicles damaged during a protest by pupils in Cosmo City, north-west of Johannesburg, Gauteng police said on Tuesday.
Police were still keeping an eye on Cosmo City Secondary School following Monday's violence, Warrant Officer Karen Jacobs said.
Hundreds of pupils protested on Monday afternoon, demanding their principal be fired.
While police were talking to them, a group ran out of the school grounds.
“They completely damaged two vehicles with stones and other hard objects. A male officer was admitted to hospital after he was hit with a brick in the face.”
Two boys, both aged 18, were arrested and charged with public violence and malicious damage to property. They were expected to appear in court soon.
The Gauteng education department was not immediately available for comment. – Sapa