The injured student, a 17-year-old senior, was stabbed in the thigh and shoulder at about 12:45 p.m. Wednesday in a third-floor hallway outside a classroom, reports The Los Angeles Times.
Police believe the incident may have stemmed from an altercation the students had a couple of days ago.
The injured student was taken to a local hospital and his condition was reported as stable, police said.
The Miguel Contreras complex houses four separate schools, which specialize in global studies, business and tourism, social justice, and academic leadership.