Parents in Toronto, York Region and Ottawa will need to make alternate arrangements for Monday.
The union representing public elementary teachers has called a one-day strike in those areas, if there is no progress in talks with the province.
There are no new talks scheduled.
ETFO says the strike includes teachers, occasional teachers, designated early childhood educators, professional support personnel and education support personnel.
A TDSB spokesperson tells NEWSTALK 1010 he does not believe daycares in the schools will be closed. The board plans to update parents on its website later today.