Children with special needs will not be returning to the classroom this week after the Government was forced to abandon the plan.
The Department of Education says the decision was down to "a lack of co-operation" from teacher unions.
The Irish National Teachers Organisation and Forsa had earlier called on the minister to postpone the reopening, saying "efforts to reassure staff schools are safe had failed".
Further talks between the Department and unions are expected over the coming days.
Minister Meets Arklow Merck Staff as Closure Talks Continue
Bray Teen’s Bail Revoked Over Breaches Linked to Local Man’s Death
Devastating Blow As 100 Jobs To Go As Merck Life Science Plant Operations To Close In Arklow
178 Wicklow Homeowners Have Successfully Tapped Into The Vacant Property Refurbishment Grant
Wicklow's Hurling And Camogie Stars Earn International Rules Call-Ups