Meanwhile, there are some schools with just one child in a classroom.
There are concerns about overcrowding in schools.
It comes as new figures from the Department of Education shows that a Westmeath school had the largest number of students in one classroom.
45 pupils were in the one room in the Lake county, it was followed by Cork with 40 children in its classroom.
There were also large classes in Fingal, Dun Laoghaire and Meath.
However, there are schools in Cork and Mayo which have just one student in a class.
Sinn Fein say the reopening of schools was made more difficult due to the overcrowding in schools.
The party's education spokesperson Donnchadh O'Laoghaire says social distancing is needed in parts of all schools with space at a premium:
Laois 10k Run and Family Fun Day Returns This Sunday
Fianna Fail Councillor Elected Tullamore Cathaoirleach
Outgoing Chair Of Offaly County Council Elected Birr Cathaoirleach
Midlands Showing Fast Growth In Mortgages For First Time Buyers
Plans For Major Laois Redevelopment Delayed
Enterprise Minister Expresses Concern Over Ticket Website Liquidation
Builders Behind Midlands Solar Farm Scoop Up Award For Construction Excellence
Laois TD Highlights Four Year Wait For Neurological Assessments
40 New Jobs On The Way To Laois
Westmeath Psychotherapist Warns Of Gambling Addictions
Katie Taylor Fight In Croke Park Sold Out
Sunshine Is On The Way For The Midlands
SIPTU Call For 'Full Answers' On Midlands College Closure
Westmeath Community Project Launching Strategic Plan Today
New Road Safety Campaign For Midlands Summer Events
Former Laois-Offaly Garda Sergeant Joins Muintir Na Tíre
Laois Accused Told Gardaí He Hit Deer After Fatal Collision
Business Leaders Meeting In Laois
Midlands Landscaper Granted Bail In Drug Case
Laois Leisure Centre Calls Gardaí Over Group's "Disgraceful Behaviour"