Midwest News understands that a Transition Year (TY) class in a county Mayo school has been sent home this morning due to a Covid 19 incidence.
It comes as there's been a significant increase in the 14 day incidence rate of Covid 19 nationally.
The World Health Organisation says the Government's Level 3 strategy is risky and it's hard to tell if it's the right path.
There has been a 38 per cent increase in the 14 day incidence rate of the virus in the Republic.
New figures shows the national total now stands at 158.5 per 100 thousand of the population.
And as figures up North surge, so too do the counties that border it.
Cavan, Monaghan and Donegal have a rate of infection of more than 300 per 100,000 of the population.
Border counties may be moved to level 4 restrictions later this week if Norther Ireland opts for a circuit break lockdown.
The Chief Medical Officer in the North has recommended a 6 week lockdown to limit the increasing spread of the virus.