It's claimed at least 70 primary school teachers will be lost in Donegal due to government cuts.
Donegal County Council has joined the INTO in calling on the Government's planned cuts to small primary schools be reversed.
It's feared that funding cuts and a change in staffing schedules for small schools will mean less teachers and bigger classes.
Both Councillors Seamus O'Domhnaill and Marie Therese Gallagher raised the issue at Donegal County Council's monthly meeting.
Councillor O'Domhnail says the cuts will hit some schools more than others: