No one was hurt but police were called and Taylor Schools were on alert after a man allegedly made threats against the students.
The unnamed teen is facing up to five years in custody.
Commerce Township middle school was evacuated Thursday afternoon after a threat was found scrawled on a bathroom wall.
A male high school student is in police custody after admitting that he constructed the devices.
The school was evacuated after someone wrote a bomb threat on a girls’ bathroom stall.
A prosecutor has approved a no-jail plea deal for a 28-year-old man who made bomb threats against Flint-area schools because of the defendant’s mental health disability.
A threat forced the evacuation of North Sashabaw Elementary School in Clarkston on Tuesday.
Police are investigating incidents at Starkweather High School in Plymouth.
Sheriff’s officials say an Upper Peninsula seventh-grader brought an 8-inch butcher’s knife to school this week.
“You don’t know what it’s like,” the student’s threat read. “I constantly fantasize of blowing up the wing as I walk away with the explosions behind me.”