San Diego, CA – San Ysidro High School was placed on a temporary lockdown in December 2025 following a stabbing incident inside a classroom, authorities confirmed. The lockdown was enacted immediately after staff and students reported the incident, prompting a swift response from local law enforcement and school officials to ensure the safety of everyone on campus.
According to the San Diego Police Department, the incident involved a student who was injured during a dispute in the classroom. Emergency responders arrived promptly and provided medical attention, while other students and faculty were secured in classrooms as a precaution. The injured individual was transported to a local hospital for treatment, and their condition was later reported as stable.
School administrators worked closely with law enforcement to manage the situation, communicate with parents, and maintain order throughout the campus. Students were released from lockdown once authorities confirmed that the threat had been contained and the environment was safe.
The incident has sparked concern among parents, students, and the wider community, highlighting the importance of school safety measures, conflict prevention, and mental health support for students. Counseling and support services were made available to students and staff affected by the event.
San Ysidro High School and local authorities continue to investigate the circumstances surrounding the stabbing, while emphasizing their commitment to preventing future incidents and ensuring a secure and supportive learning environment for all students.