Primary teachers have voted to accept the Lansdowne Road Agreement on public sector pay.
The ballot of INTO members was 64.7% in favour and 35.3% against.
Last month, the union's executive recommended its 34,000 members accept the proposals, which will see public sector workers receive a pay increase of €2,000 over the next two years.
The INTO says the flat rate increase will benefit lower paid teachers and is an important part of the deal.