At the start of third period on Wednesday, Nov. 1, the school was placed on a lockdown that lasted the rest of the school day. 

The lockdown was caused by an armed stabber on the loose. 

According to Principal Lourdes De Santiago, two students were stabbed and two were beaten during the fight.

The news was carried live on every major Los Angeles broadcast news outlet. According to TV station KTLA, the Los Angeles Police Department got a notice a few minutes before 11 a.m. that three students had possibly been stabbed. According to witnesses, this altercation began mid-nutrition and lasted through the beginning of third period.

Teachers were given instructions on Schoology on how to keep students safe. 

ABC7 reported that police had to block off Cedros Ave., which is adjacent to the school. Police and firefighters were present on campus with medics attending to the injured students. Police were able to detain three students for questioning after the incident. 

The event convinced many parents to keep their children at home the following day. In addition, the stabbing turned away many prospective parents and students from the Magnet Mixer on Nov. 2, causing unusually low attendance at the event.