Ninety taxi operators from Mitchells Plain and Khayelitsha are completing business development modul.
A four-year-old boy announced to his teacher at school snack time that he wanted to share - then pulled nine bags of marijuana out of his jacket pocket.
Police in Meriden, Connecticut were called to Hanover Elementary School in America after the young special needs student displayed the drugs.
Cops said the nine individually wrapped bags of marijuana appeared prepared for sale.
Hanover Elementary School principal Miguel Cardona called it an "extremely unfortunate" and "isolated" incident that was not witnessed by any other students.
"What's so disheartening is this is really an adult issue and problem and adult behaviour put a student at risk," Meriden schools superintendent Mark Benigni said.
"This student had no idea what he brought to school or what the substance was," he added.
Authorities are not releasing the names of the student or parents and police said there is a possibility for arrests pending the outcome of the investigation.
The Department of Children and Families is also looking into the incident.