UPDATE 2.40PM: POLICE say at this stage there is no credible evidence the bomb threat made at Sunbury State School could have been carried out.
At about 9.15am, the Maryborough school was evacuated and all students were sent to the oval after a threatening call was made to the school.
"Investigations into the threatening phone calls are continuing, but at this time there is no cause for alarm," A Queensland Police Service spokeswoman said.
"Over the past couple of weeks schools throughout Australia have been receiving threatening phone calls.
"This has also occurred in Queensland, and indeed several more schools have received threatening phone calls today."
The spokeswoman said QPS was fully investigating each and every one of the calls.
"Whilst each call is evaluated on its merits- with individual police and education responses - the majority of the calls appear to be similar in nature and pattern, designed to cause significant disruption and media coverage," she said.
"Police would like to remind the public that making threatening phone calls is a serious criminal offence, and these incidents will be fully investigated."
UPDATE 11.15AM: SUNBURY State School is one of 18 Queensland schools to have received a threatening call.
A Department of Education and Training spokesman said the calls were received on Thursday morning.
"All of these schools immediately contacted police and have enacted emergency procedures based on police advice," she said.
Sunbury State School was evacuated and children were sent to the oval.
No other schools on the Fraser Coast received a similar call.
"The department is working with police to ensure all students and staff are safe," the spokeswoman said.
"It follows threats of a similar nature made recently to schools interstate and overseas."
UPDATE 10.20AM: Children are returning to class after a bomb threat was made to Sunbury State School.
A concerned mum Angela Clarke said she was bringing her children's lunch to school when she found out about the threat.
Angela, who has two children at the school, said she saw police cars and thought something wasn't right.
"I was shocked, I still am a little bit," she said.
CHILDREN have been evacuated to the oval at Sunbury State School after a suspected bomb threat.
Two police cars are at the school on Jupiter and Edward streets.
There is no visible panic and everyone is acting calmly.