Some of the children couldn’t attend school on Thursday because they were still recovering from the sickness.
When Sowetan visited the school, the principal declined to be interviewed and ordered Sowetan to leave the school's premises.
Three women were seen preparing food for the pupils on an outside fire.
Spokesperson for the department of education, Jasper Zwane, said they were investigating the incident.
“The department is investigating the circumstances that led to the incident. The report at our disposal says the learners were treated and discharged.
"The majority are back at school and teaching and learning is progressing well. The department is monitoring the developments and will from Monday May 27 offer the required counselling,” said Zwane.