Eight York University students are suing the school for $20.5 million.
The lawsuit stems from a shooting at the Keele Campus food court early last month.
Two young women who were hurt when the gun went off are among the group of students behind the legal action.
One has serious leg injuries after being shot in the leg and the other was hit with shrapnel.
Annie Malik says the incident left her unable to go to school or do chores around the house.
The group's lawyers allege York University does not place a high enough priority on campus security.
22-year old Kemon Edwards is charged with several offences in connection with the shooting, including aggravated assault.