THREE children were rushed to hospital after being involved in an alleged drug overdose at a prominent Sunshine Coast state school.
Coolum State High School principal Chris Dench sent a letter to parents and caregivers advising of the "serious incident allegedly involving illicit substances" taken on May 23.
"In each instance first aid was administered by staff at the scene and ambulances were immediately called," Mr Dench said.
"Parents were also immediately informed. The students in question were taken to hospital."
Mr Dench said he would "consult with the police".
"If any students are found to be involved in this incident they will be dealt with in line with our school's Responsible Behaviour Plan," he said.
Mr Dench suggested parents "consider the potential ramifications of engaging in any communication within the community or on social media that might be interpreted as speculation, rumour, innuendo or gossip".
He advised parents and caregivers there were "strict legal restrictions about communicating any details about the matter".
Counselling has been offered to those needing support.
He reassured parents "we treat the safety and welfare of your children, our students, as our highest priority at all times".
The Education Department has confirmed "ambulances were called for three Coolum State High School students on 23 May, after they reported feeling unwell".
The school has reported the matter to the Queensland Police Service for further investigation.
A teenager at the school said the girls were in Year 11 and Year 12 and she understood they had taken the drug Lyrica "to get on a high" during a break.
Lyrica is a Schedule 5 drug to treat nerve pain and seizures, but is also known as a drug that has similar effects to the party drug Ecstasy.
The teenager said one of the girls had a severe reaction.
"She was unconscious and had seizures," she said.
The teenager said many of her friends' parents were thinking of taking them out of the school because of the incident.
A Facebook post put up hours after the incident on the Coolum State High School page only fuelled anger.
"Systems worked well at Coolum State High School today. All girls are safe and with family," it read.
It was removed from Facebook later in the day.
The teenager's mum said the incident was the incident was "very scary".
"It can be a bit of a jungle there. Some parents are thinking of pulling their children out."
But the teenager said she was not aware of a drug problem at the school and was very happy at the school.
Update your news preferences and get the latest news delivered to your inbox.