The Eastern Cape Department of Health said the pupils fell sick after eating sheep liver with pap at the school.
The food is a free provision offered to pupils as part of the national school nutrition programme.
Eastern Cape health department said 40 of the pupils were transferred to Bhisho Hospital‚ where they received treatment after complaining of stomach cramps.
This comes as the Eastern Cape departments of health and education struggle to gain control of the diarrhoea outbreak in King William’s Town schools. More than a thousand pupils from 11 schools in the region were treated at three provincial hospitals last week.
In light of the outbreak‚ the Eastern Cape government has taken a decision to deploy nurses to all the affected schools in that region.
DispatchLIVE understands that an outbreak response team‚ which is doing the rounds at the schools‚ is at Kei Road Primary School this morning.