All Hamilton, Halton and Niagara Public elementary schools are open today to staff and students.
A message on the board's website says, "We apologize for the short notice, but the timing of this announcement was beyond our control. We look forward to welcoming students to school today."
The moves came after the Elementary Teachers' Federation of Ontario called off today's planned walkout by teachers.
EFTO president Sam Hammond made the announcement moments after the Ontario Labour Relations Board ruled the planned walkout would be illegal.
Hammond says the union respects the decision and that teachers would be asked not to stage the protest of the Liberals' decision to impose two-year contracts under a controversial anti-strike law.
The Ontario Secondary School Teachers Federation told Premier Dalton McGuinty this morning that it won't go ahead with a walkout on Wednesday for public high school teachers.