Falkirk Council confirmed police officers attended at St Mungo’s High School, in Merchiston Avenue, on Monday morning.
A spokesman said: “The school received a threat and the headteacher immediately informed police, who then carried out a search of the building and nothing was found. There were no pupils in school on Monday as this was an in-service day.”
A Police Scotland spokesman added: “We received a report of a threatening e-mail sent to St Mungo’s High School in Falkirk at around 10.45am on Monday, January 6. Initial enquiries were carried out – the threat is not believed to be credible and advice was given to staff.”