Detectives say the threat targeted Redwood High School.
Officials identified the suspect and served a search warrant at the 16-year-old's home.
He was taken into custody and is currently booked into the Juvenile hall detention facility for criminal threats and making a false report of an emergency.
Visalia Police say they are aware of a new threat circulating social media, and an investigation has already started.
This week, there will be increased law enforcement presence throughout the Visalia Unified School District.