A police officer will now be stationed at a northwest Toronto high school where a student was seriously stabbed Tuesday and another shot and killed in 2007.

C.W. Jefferys was not one of the 19 Toronto schools with an officer because the trustee for the area said they wanted to have more community consultation before coming to a decision.

Now John Campbell, chair of the Toronto District School Board, says it will be two to three weeks before a police presence is at the school. He says the decision was made following the stabbing.

Police say they are in the process of identifying a "person of interest" in the incident.

The school was put under lockdown at about 1 p.m. Tuesday after a 16-year-old boy was stabbed in the stomach.

He was taken to Sunnybrook hospital with serious but not life-threatening injuries, Insp. Mike Earl says.

Investigators say the victim left the school after being attacked -- heading by cab to his home near Jane Street and Sheppard Avenue. He then called 911 at 12:47 p.m., and was taken to hospital.

Earl says police are looking for at least one suspect and a weapon has not been recovered.

C.W. Jefferys is the same school where 15-year-old Jordan Manners was shot and killed in May 2007. It is located at 340 Sentinel Rd., near Keele Street and Finch Avenue.

An advisory panel following Manners' killing, headed by lawyer Julian Falconer, concluded that many of the more than 250,000 students at Toronto public schools contend daily with a "culture of fear" that pervades many of the city's secondary institutions.

The panel's 1,000-page report, released in January, uncovered an alarming number of unreported incidents of violence and sexual harassment at specific schools in Toronto.

Despite the two violent attacks in the past couple of years, principal Audley Salmon insists that C.W. Jefferys is safe for students and staff.