A "possible emergency situation" around 12:15 p.m. Friday prompted the evacuation of Buckhannon-Upshur Middle School.
Upshur County Board of Education Assistant Superintendent David Dilly said all of the students were safely transported to the high school. He later confirmed the emergency to be a bomb threat.
The students were sent to the high school as "a precautionary measure," Dilly said, while law enforcement officers searched the middle school grounds and buildings. The school was found to be free of any hazards, Dilly said.
The investigation into the origin of the threat is continuing, he added.
"I wish to thank the students, staff, law enforcement and parents for their calm cooperation during this situation," Dilly said in a prepared statement.
Friday's incident is the latest in a string of events that have forced schools to be cleared. In March, bomb-sniffing dogs and law enforcement were kept busy in Barbour County as bomb threats were investigated at Belington and Philippi middle schools and Philippi Elementary School. In September, all Barbour County schools were evacuated after officials were alerted to a possible bomb threat.
Lewis County High School in March was the target of a bomb threat, though the juvenile behind the incident was quickly caught by the school's Prevention Resource Officer. The incident forced the early dismissal of all county schools.
Two schools in Randolph County - Elkins High School and Midland Elementary School - also received bomb threats in March. An Elkins High School student was charged with conspiracy to commit a terroristic act this week following an investigation into the matter.