More than a quarter of school building projects that were scheduled to go to construction in 2015 are still waiting for work to begin, according to information on the Department of Education website.
Updated building lists show that almost three years after they were told they would go to construction within a year, 20 out of 70 major schools projects have yet to go on site.
Most of these projects are stuck at the earliest design stage and have yet to go to tender.
Fianna Fáil has criticised the delay and the party's education spokesperson Thomas Byrne said the projects had been announced to much fanfare in December 2014.
He called the lack of progress "inexcusable" and that in some instances a site had not even been selected yet.
However, a spokesperson for the Department of Education said the Government was building more schools and providing more additional school places than ever before.
It said it had doubled the number of additional school places being provided since 2010, when Fianna Fáil was in power.
In December 2014, the Department of Education published a list of 70 major school building projects scheduled for construction in 2015. They were mostly new schools, but included some large extensions.
Lists updated earlier this month show that just 40% of the projects have been completed.
One third are listed as still under construction and 28% have yet to go onsite. The bulk of those schools have not yet gone out to tender.
St Patrick's Special School in Enniscorthy, Co Wexford is one of the schools on this list.
The school was told that construction would begin on a new school in 2015, but the start date has been continuously postponed since then.
The school featured recently on RTÉ News, and a few days after that, the Department of Education put the project out a tender.
Children with complex disabilities are obliged to cross the school yard in all weathers in order to use toilet facilities.
