Four Southridge High School students were put on emergency expulsion Sunday over a threat made on social media.
Parents were told of the incident in a message from Principal Molly Hamaker-Teals.
Kennewick police were notified of the threat and determined it was meant as a joke to frighten a fifth student, Hamaker-Teals told parents.
The four students said in a private Facebook chat room that there would be a shooting at the high school on Monday, which the fifth student reported.
The four students are on emergency expulsion pending a hearing. Classes will resume Monday as usual, Hamaker-Teals said.