Teachers say rapid antigen testing should be rolled out in primary schools.
It's hoped this could drive down Covid cases as children come back from mid-term.
As schools return after Halloween, the question of just how safe classrooms are has once again become a source of concern.
Covid cases have risen sharply among children under 12 in the last few weeks,
And 100 substitute teachers are being recruited to cover staff shortages, but NPHET has said contracting the virus in schools is still uncommon.
Trinity College immunology professor Kingston Mills says cases will likely continue to grow as long as children are unvaccinated.
Joe McKeown, president of the Irish National Teachers Organisation, says antigen testing in primary schools could help to drive down cases.
Despite the call, education Minister Norma Foley has said the decision is one that has to come from NPHET, which is currently considering the issue.
