The Post Primary Teachers Association has reached an interim agreement with the Ministry of Education on the Government's flagship education policy.
The union today announced the deal just a day after the primary school staff union, the Educational Institute, rejected the plan to pay teachers and principals more to work across groups of schools.
The union is restricting details of the agreement to its members, but had said the plan is unworkable without changes including reduced pay rates for some of the roles.
Secondary principals recently reached their own agreement, which reduced the amount paid for one of the top roles from $40,000 to $30,000 a year.
But the agreements are not a done deal - they will be voted on by union members next term.
Yesterday, primary school teachers rejected the policy, raising doubts about whether it can go ahead at all in primary schools next year.