Jackson County Sheriff's deputies were on hand when classes started Friday at Fort Osage High School after disputes between students led to rumors of violence.
Classes began as normal and students were already scheduled only to be in class half a day.
Fort Osage School District spokeswoman Stephanie Smith said the sheriff's deputies were there as a precaution.
"We take all of this very seriously," she said.
District officials received word that two groups of students were fighting. Smith said the students and their parents were sat down and talked to about the issue.
But postings on Facebook and emails that were circulated led to fears that some students would bring guns to schools.
Smith said a rumor circulated via email that "kids being shipped in from the KC School District are bringing guns to school tomorrow."
However, Fort Osage has not received any transfer students from the Kansas City School District, which is unaccredited. This means students can transfer under state law but those transfers are tied up in legal challenges.
"Recently, fights and rumors of potential fights have been investigated and students have been disciplined appropriately when necessary," Smith said. "School staff and administration, as well as several members of the Jackson County Sheriff's Department, are exhibiting an overabundance of caution today to ensure everyone's safety."
The extra efforts came in part because of the deadly shooting rampage in Ohio earlier this week.
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