According to White Lake Police, a group of students was responsible for Thursday's bomb threat at Lakeland Highland.
A report filed with the department states that a group, all juveniles, discussed making a threat because they did not want to attend classes on Friday.
A few members of the group actively participated in writing a threat on a bathroom wall, and then took photos and notified administration at Lakeland that they (the group) had found the threat.
School Resource Officer John Kirken led an investigation and all of the students involved were expelled, the report states.
Those in the group that actively participated in making the threat could face charges of making a terrorist threat - a 20 year felony - and police said the case will be forwarded to the prosecutor's office once the investigation is complete.
"We encourage any parent or student who hears a credible threat to contact Officer Kirken or the administration," Lt. Don Nankervis said. "If it's after hours you can always call the police department. The school district and this department take these threats very seriously."