A 16-year-old male was stabbed Friday afternoon at Eastern Commerce Collegiate, in Toronto's east end.
The teen, who was stabbed in the stomach, was conscious and breathing when he was taken to hospital, police said.
The stabbing took place in a hallway inside the school.
Police added that the victim's injuries are not believed to be life-threatening.
Police are looking for four male suspects but it's not clear if they're students at the high school.