So they were demolishing a building right next to a school with kids in attendance. Doesn't sound very bright.
Not a normal school house. School is an English as Second Language institute mainly for adult education. It's in a small office building, IIRC. This area is one of Toronto's busiest areas and buildings are close packed (businesses/offices/condos). There's a bank adjacent to the theater complex as well (theater was built in 1920's and has been renovated many times since - an L-shaped building that stretches down the street from Bloor to Charles St (North/South) one block west of Yonge St.).
Worker at the bank (very shaken up) said on air he just got up to walk to the photocopier and right behind him a chunk of ceiling came down and crushed his desk.