It's expected over 6,000 teachers and education workers will attend a rally in downtown Kitchener on Friday afternoon.
They will begin their march at 10:30 a.m.
That will be followed by speeches from local union leaders and other community members, starting at noon in Carl Zehr Square.
"We are excited to join together with our education colleagues across the four affiliates for this event." Ontario Secondary School Teachers' Federation District 24 President, Rob Gascho said in a release.
"We stand together during this challenging time and would like to encourage members of the community to join us! Friday’s event is for everyone who believes in the importance of a strong, publicly-funded education system." he added.
All four Ontario teachers' unions announced they would hold a one-day strike on February 21, if a new deal isn't reached with the province before then.