The union, which represents some 60,000 teachers and education employees, announced on April 20 a preliminary agreement with the province, which ended a round of tense negotiations. In a statement Thursday afternoon, the Ontario English Catholic Teachers` Association (OECDTA) said the agreement was reached with “the Association of Trustees of the Ontario Catholic Trustees and the Government of Ontario on the core terms of a new collective agreement. ONTARIO – The Ontario Secondary School Teachers` Federation (OSSTF) announced Monday, April 20, that it has reached an agreement with the province and its employers. The union had wanted personal education to be optional for everyone, a request the clerk repeatedly said he could not answer. .