They would hide in five of the six staff toilets, leaving only one available to film the unsuspecting teachers.
When contacted, the school’s board of directors chairman said the case had been settled internally.
He said the school authorities, teachers and parents agreed to take the pupils to the police station “to teach them a lesson”, adding that action would be taken against the girls.
Seri Alam police chief Jokhiri Abd Aziz confirmed receiving a report on the incident and the pupils claimed that all photos had been deleted. Police would follow up on the case, he said.