The undisclosed threat was found above a urinal in a bathroom at Freedom High School, the district said on Twitter.
“In consultation with Bethlehem Township Police, school and district officials determined that classes will continue as usual,” the post said.
Meanwhile, Bethlehem Township police were patrolling school grounds for the rest of the day “out of an abundance of caution,” the district said.
Click here to follow Daily Voice Bethlehem and receive free news updates.