Ipswich Grammar School has been evacuated after the school received a threat over the phone.
All staff and students were escorted off the premises before 9am this morning and emergency services were called to the scene.
"Due to a telephone threat this morning, all staff and boys have been evacuated," a Facebook post from the school said.
The students were relocated to the school's oval as the investigations commenced.
Ipswich Grammar School is "a Prep to Year 12 independent day and boarding school" for boys and the oldest grammar school in Queensland at 154 years old, according to its website.
More to come.