West Liberty-Salem parents received a one-call message late Wednesday night regarding a threat that spread on social media.
Superintendent Kraig Hissong said the threat was not real.
The Champaign County Sheriff's Office had deputies on campus Thursday morning.
Hissong said he's not sure how the story started, but it caused concern for several families.
District officials determined the threat was not real Wednesday afternoon.
The one-call was made to quell fears after parents reached out to school administrators Wednesday night.
The incident happened three months after Ely Serna shot Logan Cole with a 12-gauge shotgun in a high school bathroom.
Another high school student suffered minor injuries.
Serna faces 13 charges, including two counts of attempted murder; three counts of felonious assault; six counts of improperly discharging a firearm; and single counts of inducing panic and illegal conveyance of a deadly weapon in a school.
A hearing is set for May 5th to determine if he should be tried as an adult.
The hearing will be open, but any testimony from psychologists will be private.