A 17-year-old boy is in hospital after a fight outside a Laval high school ended with him being stabbed in the upper body, according to police. The attack took place outside École PolyJeunesse on Ste-Rose Boulevard just after 2:30 p.m. The victim was rushed to a hospital. He is expected to survive his injuries. Police have arrested a 15-year-old male in connection with the case. The investigation is ongoing.