The future of several school building projects, including the State's largest schools' infrastructure project, looks in doubt after building company Sammon Group announced its liquidation.
The firm has blamed the collapse of UK construction and services giant Carillion for its failure.
Sammon is currently constructing two post primary schools on a shared campus in Maynooth, Co Kildare.
The schools are due to house 2,000 students when they are completed.
It is the largest school building project undertaken on behalf of the State.
The Minister for Education has said a retendering process will now need to be done to complete the school buildings in Maynooth.
The project was due to be completed by May 2019.
Richard Bruton said he had requested his Department to provide him with a critical path for the completion of this campus project and to consider how each stage in that critical path could be delivered as quickly as possible – while also ensuring that the quality and integrity of the project was fully protected.
The company is also building two schools in Cork, as well as housing projects in Waterford and in Dublin.
Sammon is involved in a number of other school building projects that are almost complete.
RTÉ News understands that two weeks ago the company left a site at Tullamore College.
The school car park and playing fields have yet to be completed.
The company had been building five schools and one college as part of a public private partnership led by Carillion, when the UK company collapsed earlier this year.
In a statement, Sammon CEO Miceál Sammon said the collapse of Carillion and the sudden suspension of work on six projects had placed the company in "a perfect storm".
He said the company had made every effort since then to get the contract restarted in the interests of their business, their contractors and the school communities.
He said a delay in decisions around these projects had frustrated the company's strategy to exit examinership and ultimately placed the company in an irrecoverable position.
The Department of Education has said the liquidation of Sammon had added additional complexity to the process of confirming the arrangements for completion of the five schools and one college of further education in Bray, Meath and Carlow that were effected by the collapse of Carillion.
It said the Project Funders anticipated that the pathway forward to completion of the schools would become clearer within the next fortnight.
It said it was still the case that the schools closest to completion remain best positioned to be finished for September and that all efforts were being made to achieve this.
Sammon employs more than 200 people.
It said these ongoing circumstances had led to a fundamental uncertainty and that the High Court had granted its liquidation this morning.
Mr Sammon said it was "a painful and distressing time" for all who worked in the business.
He also said he believed it was "highly improbable" that the five schools and one college of further education that were part of the Carillion Public Private Partnership deal would be open by the coming school year as had been promised.