Multi-denominational primary schools group Educate Together is to open 12 new school buildings on Monday.
Educate Together schools aim to promote integration of minorities in Irish society.
There are currently 44 such primary schools around the country.
The 12 new schools are based in Carlow, Dublin, Kildare, Westmeath, Wexford and Wicklow.
According to Educate Together boss Paul Rowe, the programme shows there should be no need for the use of prefabs to address school space shortages.