MANCHESTER — The city’s paraprofessional union has reached a concessions deal with the Manchester School District.

The tentative agreement was made one week after the district’s largest union, the Manchester Education Association, which represents city teachers, turned down a concession deal by a 3-1 margin. The Association of Manchester Principals also turned down a tentative agreement last week.

These agreements include concessions that would require staff pay more for health insurance costs, doctor visits and prescription drugs. Under the deal, staff would be offered early retirement incentives and the potential to save jobs slated for layoffs.

The Board of School Committee will meet Thursday at 7 p.m. in City Hall to review the agreement in a closed-door session. The board is expected to review the agreement and indicate whether there is enough support for the paraprofessional union to move forward with a membership vote.

There are about 325 paraprofessionals working in the school district, providing support primarily for special education students in classrooms across the city.

Mayor Ted Gatsas said on Tuesday he is open to talking to all school unions. As of Tuesday, unions representing coordinators and directors and other school support staff had negotiation meetings scheduled.