Challenger Middle School in Mira Mesa briefly went into a shelter-in-place mode yesterday after an anonymous caller reported a bomb threat. School Police and San Diego Police officers swept the campus, later declaring it safe. Students stayed in their classrooms during the security check and were ultimately dismissed at the usual 3:05 p.m. bell.
Anonymous Call Triggers Morning Lockdown and Police Sweep
The threat came in around 9:40 a.m., prompting staff to lock classroom doors while School Police set up a safety perimeter and San Diego officers assisted with a full search of the grounds, according to FOX 5 San Diego. After officers completed their sweep and found no device, the shelter-in-place was lifted, and the school returned to its normal schedule. In a letter to families, Principal Erik Sullivan stressed that “student and staff safety is our highest priority,” the station reported.
Location and Dismissal Details
Challenger Middle School is located at 10810 Parkdale Ave., and the campus bell schedule lists a regular dismissal time of 3:05 p.m. The timing matched the updated message families received following the all clear. The posted bell schedule for the 2025–26 school year confirms that dismissal time, according to Challenger Middle School.
How the District Handles Threats
San Diego Unified states that campus safety is its top priority and that every school maintains a state-mandated Safe School Plan, regularly practicing emergency procedures with School Police. That framework helps explain the quick response and the coordinated effort to secure the campus and set up perimeters, according to the San Diego Unified School District.
What Families Should Expect Next
School Police remained in the surrounding community throughout the day as an added precaution, and officials told families the campus had resumed normal operations, FOX 5 San Diego reported. Parents with lingering questions were directed to contact the school for the latest information. District officials said they would share additional updates if new details emerge.
