The Irish National Teachers' Organisation and some crèche operators have expressed concern about changes to close contact rules for children.
From Monday, those aged 12 and under will no longer have to be tested or stay at home if they are asymptomatic close contacts of a Covid case in school.
Automatic contact tracing will also be discontinued for them. The INTO said it is shocked at the speed of the decision to allow unvaccinated children who are linked to a confirmed case in their class continue to attend school.
The union, along with some crèche operators, believe it is too soon to make this decision and have urged the Government to revisit the issue.