Toronto fire was dispatched to the scene at St. Agatha Catholic School near St. Clair Ave East and Kingston Road at 4:30 p.m.
Police in 43 division said they are treating the fire as a possible arson, but they have few details on suspects or how the fire may have started.- Malvern playground destroyed by fire will be rebuilt
In early May, a playground fire at Mary Shadd Public School near Finch Avenue East and Nielson Road destroyed a $20,000 play area that was installed a year earlier.
It had taken the Malvern community five years to raise the funds to build the structure.
Toronto police arrested an 18-year-old, a 19-year-old and a 17-year-old young offender later that month and charged them with arson.