"It just went through a text message that there was going to be a bomb today," said 12th grader Victoria Schmidt.
Schmidt came to school despite the rumors, but others like Roneisha Poston stayed home Monday as a precaution.
"To be honest, I just thought they were rumors. I brushed it off at first, and I started getting a lot of phone calls Sunday night and that just had me take more precautions at that time," she explained.
Johnston County school officials say they're investigating whether any student should be held accountable.
"Anytime there's an allegation or a threat, law enforcement is involved," said spokesperson Terri Sessoms.
Police say it seems one or more individuals forwarded the rumors - embellishing them along the way.
School officials say it's no joking matter and alerted parents with phone calls.
"That was reassuring to know that this school took every precaution to be on top of it to prevent, in the event it was more than just a rumor to prevent anything from happening. It was definitely reassuring," said parent Stacie Sonesson.
Police say it's near the end of the school year and some students may be eager to get out of exams or get out of school to enjoy the nice weather.
Either way, law enforcement will have a larger presence at Clayton High School until the end of the year.