Crystal Park High School, Petit High School, Gekombineerde Skool Noorderlig and Jahari Christian Academy were searched.
The operation was conducted by Crystal Park SAPS social crime prevention officer Sgt Lerato Mopeli, sector commanders, the K-9 Unit, Metro police, Putfontein and Daveyton SAPS social crime prevention officers, patrollers and volunteers from the Crystal Park SAPS Trauma Centre.
Mopeli informed pupils about school safety and substance abuse.
She was pleased that no drugs were found at three of the schools, which is an improvement on a previous search.
The City Times reported on six packets of dagga being found during searches at Petit High School and Crystal Park High School, on January 20.
Five of the packets were found at Petit High, along with cigarettes and a small knife.
One packet of dagga was discovered in a bathroom at Crystal Park High School.
