A bomb sniffing dog from the Farmersville Police Department checked out each building before the campus was declared safe.
COS student Cindy Flores said, "I was a little scared at first I was nervous because you know how things have happened on campuses and who would have thought here in Visalia."
"To me it does seem like a joke but you never know when one's going to happen," said Blanca Ramos.
Classes resumed shortly before 1:00 Tuesday afternoon. No one has been arrested in connection with the bomb threat.