The San Mateo County District Attorney's office says 19-year-old Christine Nicole Azzolino was sentenced on Wednesday after admitting to using another student's account to send a message to administrators at Burlingame High School about having a gun and a bomb in February, the San Francisco Chronicle reports.
Authorities locked down the school immediately after Azzolino sent the e-mail, evacuating students and searching the premises with bomb-sniffing dogs.
Azzolino would tell investigators that the threat had no merit. She pleaded no contest to the misdemeanor charge of falsely reporting a bomb in July.
Azzolino must also attend 32 hours of counseling in addition to her jail time and probation.
She returns to court to discuss restitution in November.