Lexington High School was placed on lockdown Thursday after a phoned-in threat, and deputies quickly set up a large perimeter around the campus. Under the lockdown rules, no one could enter or leave the grounds except law enforcement personnel and school administrators.
The move put students, staff, parents and drivers in wait-and-see mode while officers swept and secured the area. School officials told parents just after 1:30 p.m. that investigators had found evidence indicating the threat was not credible, but the campus stayed closed while law enforcement cleared classrooms as a precaution.
Authorities had not released details on the nature of the threat, and that left the day shaped less by what was known than by what could not yet be ruled out. In that gap, the response stayed tight: a wide perimeter, limited movement on campus and a warning to avoid the area until the all-clear.
That caution matters because the district did not treat the update as a reason to reopen immediately. Lexington School District 1 said the campus would remain closed until every classroom had been cleared, and parents would be notified when the lockdown was lifted.
For now, the threat has not been described, the person behind it has not been identified and the school is still operating under precaution rather than certainty. The lockdown will end only when law enforcement finishes its sweep and the district decides the grounds are safe enough for students and staff to return.

