But police have reassured worried parents it was not a ‘substantive’ threat.
Officers and staff worked together to search school buildings.
And a joint statement was released following the incident by Dumfries and Galloway Council and Police Scotland.
It said: “This morning a number of schools in the Central Belt and south of Scotland received threats by automated telephone. Dumfries High School was one of these schools.
“The school has robust procedures in place to assess risk. Police Scotland was informed immediately and attended the school. Police Scotland and Dumfries and Galloway Council’s Education Service have been aware of such threats as an emerging issue across the UK in recent weeks.
“There is nothing to indicate that this was a substantive threat and it was, therefore, important not to unnecessarily disrupt pupils’ learning and teaching. Obviously, this matter will involve a significant investigation by Police Scotland.”