The secondary school teachers are holding a one day strike and the board decided to close the elementary schools as well.
They were concerned about a lack of supervision for the students as some workers are members of the OSSTF and would be out on strike.
All schools in the system will be back open tomorrow.
The schools in the Northeastern Catholic district school board are open Wednesday with no interruptions.
But that is not to say there will be no interruptions in the near future.