There will be an increased police presence at Kalani High School in East Oahu in response to a threat made against the school.
In a letter on Wednesday, school officials informed parents of the situation but did not specify who made the threat or what kind of threat it was.
Police did not release further details, either.
Officials warn that anyone who makes a terroristic threat could be expelled and potentially face criminal charges.
This is the latest in a string of threats made at schools across the state.
Early last month, rumors of a threat rattled students and faculty at Mid-Pacific Institute. Police on the Big Island also responded to threats in Konawaena, Pahoa and Keaau.
And in February, a Leilehua High School student was arrested for allegedly saying he would shoot up the school.
Since the school shooting in Parkland, Florida, a string of threats have prompted schools to bolster security and police to increase their presence on campus.
This story may be updated.