Police and school officials are trying to figure out who is responsible for the threatening messages and if the two incidents are related.
The first threatening message was found two weeks ago in a classroom. The second was found Monday afternoon scrawled on a bathroom stall.
“The first sentence was an expletive. The second sentence didn't talk about a specific weapon or target, but it was threatening to our entire school community,” said Peggy Vint, superintendent of the Bondurant-Farrar Community School District.
A threatening message left in the stall of a boy’s bathroom at Bondurant-Farrar High School was short on details, but it was enough for Vint to e-mail parents explaining the situation and giving them a choice.
"If they wanted to keep their student home from school today, it would be an excused absence,” said Vint.
Parents received a similar e-mail from the district just two weeks earlier when a message was found on a graphing calculator in a classroom.
"It is concerning. You never want anything bad to happen to your kids,” said Craig Campbell, a parent.
Despite his concern, Campbell left the decision up to his kids.
"I let my kids know they were free to stay home if they would like,” said Campbell.
They went to class.
More than 250 of the school's 400 students did not.
This was the last day of school before Thanksgiving break.
When students return, Vint wants them to feel safe.
"We're making effort to get to the bottom of this,” said Vint.
Thanks to surveillance footage in the hall outside the bathroom, Vint says the school has been able to pinpoint students that may be responsible.
"The principal and additional staff are interviewing students that used that restroom,” Vint told Channel 13 News.
School official hope to solve both cases and prevent a third threat from disrupting any more school days.